diff --git a/tests/core/pyspec/eth2spec/test/capella/sanity/test_blocks.py b/tests/core/pyspec/eth2spec/test/capella/sanity/test_blocks.py
index 3c406e524..229d8ecc5 100644
--- a/tests/core/pyspec/eth2spec/test/capella/sanity/test_blocks.py
+++ b/tests/core/pyspec/eth2spec/test/capella/sanity/test_blocks.py
@@ -21,9 +21,13 @@ from eth2spec.test.helpers.withdrawals import (
 from eth2spec.test.helpers.voluntary_exits import prepare_signed_exits
 
 
+#
+# BLSToExecutionChange
+#
+
 @with_phases([CAPELLA])
 @spec_state_test
-def test_successful_bls_change(spec, state):
+def test_success_bls_change(spec, state):
     index = 0
     signed_address_change = get_signed_address_change(spec, state, validator_index=index)
     pre_credentials = state.validators[index].withdrawal_credentials
@@ -44,6 +48,82 @@ def test_successful_bls_change(spec, state):
     assert post_credentials[12:] == signed_address_change.message.to_execution_address
 
 
+@with_phases([CAPELLA])
+@spec_state_test
+def test_success_exit_and_bls_change(spec, state):
+    # move state forward SHARD_COMMITTEE_PERIOD epochs to allow for exit
+    state.slot += spec.config.SHARD_COMMITTEE_PERIOD * spec.SLOTS_PER_EPOCH
+
+    index = 0
+    signed_address_change = get_signed_address_change(spec, state, validator_index=index)
+    signed_exit = prepare_signed_exits(spec, state, [index])[0]
+
+    yield 'pre', state
+
+    block = build_empty_block_for_next_slot(spec, state)
+    block.body.voluntary_exits.append(signed_exit)
+    block.body.bls_to_execution_changes.append(signed_address_change)
+
+    signed_block = state_transition_and_sign_block(spec, state, block)
+
+    yield 'blocks', [signed_block]
+    yield 'post', state
+
+    validator = state.validators[index]
+    balance = state.balances[index]
+    current_epoch = spec.get_current_epoch(state)
+    assert not spec.is_fully_withdrawable_validator(validator, balance, current_epoch)
+    assert validator.withdrawable_epoch < spec.FAR_FUTURE_EPOCH
+    assert spec.is_fully_withdrawable_validator(validator, balance, validator.withdrawable_epoch)
+
+
+@with_phases([CAPELLA])
+@spec_state_test
+def test_invalid_duplicate_bls_changes_same_block(spec, state):
+    index = 0
+    signed_address_change = get_signed_address_change(spec, state, validator_index=index)
+    yield 'pre', state
+
+    block = build_empty_block_for_next_slot(spec, state)
+
+    # Double BLSToExecutionChange of the same validator
+    for _ in range(2):
+        block.body.bls_to_execution_changes.append(signed_address_change)
+
+    signed_block = state_transition_and_sign_block(spec, state, block, expect_fail=True)
+
+    yield 'blocks', [signed_block]
+    yield 'post', None
+
+
+@with_phases([CAPELLA])
+@spec_state_test
+def test_invalid_two_bls_changes_of_different_addresses_same_validator_same_block(spec, state):
+    index = 0
+
+    signed_address_change_1 = get_signed_address_change(spec, state, validator_index=index,
+                                                        to_execution_address=b'\x12' * 20)
+    signed_address_change_2 = get_signed_address_change(spec, state, validator_index=index,
+                                                        to_execution_address=b'\x34' * 20)
+    assert signed_address_change_1 != signed_address_change_2
+
+    yield 'pre', state
+
+    block = build_empty_block_for_next_slot(spec, state)
+
+    block.body.bls_to_execution_changes.append(signed_address_change_1)
+    block.body.bls_to_execution_changes.append(signed_address_change_2)
+
+    signed_block = state_transition_and_sign_block(spec, state, block, expect_fail=True)
+
+    yield 'blocks', [signed_block]
+    yield 'post', None
+
+
+#
+# Withdrawals
+#
+
 @with_phases([CAPELLA])
 @spec_state_test
 def test_full_withdrawal_in_epoch_transition(spec, state):
@@ -112,35 +192,6 @@ def test_many_partial_withdrawals_in_epoch_transition(spec, state):
     assert len(spec.get_expected_withdrawals(state)) == 1
 
 
-@with_phases([CAPELLA])
-@spec_state_test
-def test_exit_and_bls_change(spec, state):
-    # move state forward SHARD_COMMITTEE_PERIOD epochs to allow for exit
-    state.slot += spec.config.SHARD_COMMITTEE_PERIOD * spec.SLOTS_PER_EPOCH
-
-    index = 0
-    signed_address_change = get_signed_address_change(spec, state, validator_index=index)
-    signed_exit = prepare_signed_exits(spec, state, [index])[0]
-
-    yield 'pre', state
-
-    block = build_empty_block_for_next_slot(spec, state)
-    block.body.voluntary_exits.append(signed_exit)
-    block.body.bls_to_execution_changes.append(signed_address_change)
-
-    signed_block = state_transition_and_sign_block(spec, state, block)
-
-    yield 'blocks', [signed_block]
-    yield 'post', state
-
-    validator = state.validators[index]
-    balance = state.balances[index]
-    current_epoch = spec.get_current_epoch(state)
-    assert not spec.is_fully_withdrawable_validator(validator, balance, current_epoch)
-    assert validator.withdrawable_epoch < spec.FAR_FUTURE_EPOCH
-    assert spec.is_fully_withdrawable_validator(validator, balance, validator.withdrawable_epoch)
-
-
 def _perform_valid_withdrawal(spec, state):
     fully_withdrawable_indices, partial_withdrawals_indices = prepare_expected_withdrawals(
         spec, state, num_partial_withdrawals=spec.MAX_WITHDRAWALS_PER_PAYLOAD * 4,
diff --git a/tests/core/pyspec/eth2spec/test/helpers/bls_to_execution_changes.py b/tests/core/pyspec/eth2spec/test/helpers/bls_to_execution_changes.py
index 61c84b515..446fa9710 100644
--- a/tests/core/pyspec/eth2spec/test/helpers/bls_to_execution_changes.py
+++ b/tests/core/pyspec/eth2spec/test/helpers/bls_to_execution_changes.py
@@ -2,7 +2,7 @@ from eth2spec.utils import bls
 from eth2spec.test.helpers.keys import pubkeys, privkeys, pubkey_to_privkey
 
 
-def get_signed_address_change(spec, state, validator_index=None, withdrawal_pubkey=None):
+def get_signed_address_change(spec, state, validator_index=None, withdrawal_pubkey=None, to_execution_address=None):
     if validator_index is None:
         validator_index = 0
 
@@ -13,11 +13,14 @@ def get_signed_address_change(spec, state, validator_index=None, withdrawal_pubk
     else:
         withdrawal_privkey = pubkey_to_privkey[withdrawal_pubkey]
 
+    if to_execution_address is None:
+        to_execution_address = b'\x42' * 20
+
     domain = spec.get_domain(state, spec.DOMAIN_BLS_TO_EXECUTION_CHANGE)
     address_change = spec.BLSToExecutionChange(
         validator_index=validator_index,
         from_bls_pubkey=withdrawal_pubkey,
-        to_execution_address=b'\x42' * 20,
+        to_execution_address=to_execution_address,
     )
 
     signing_root = spec.compute_signing_root(address_change, domain)
diff --git a/tests/core/pyspec/eth2spec/test/phase0/sanity/test_blocks.py b/tests/core/pyspec/eth2spec/test/phase0/sanity/test_blocks.py
index b94a01f7f..0e19e65b7 100644
--- a/tests/core/pyspec/eth2spec/test/phase0/sanity/test_blocks.py
+++ b/tests/core/pyspec/eth2spec/test/phase0/sanity/test_blocks.py
@@ -433,7 +433,7 @@ def test_proposer_slashing(spec, state):
 
 @with_all_phases
 @spec_state_test
-def test_double_same_proposer_slashings_same_block(spec, state):
+def test_invalid_duplicate_proposer_slashings_same_block(spec, state):
     proposer_slashing = get_valid_proposer_slashing(spec, state, signed_1=True, signed_2=True)
     slashed_index = proposer_slashing.signed_header_1.message.proposer_index
     assert not state.validators[slashed_index].slashed
@@ -450,7 +450,7 @@ def test_double_same_proposer_slashings_same_block(spec, state):
 
 @with_all_phases
 @spec_state_test
-def test_double_similar_proposer_slashings_same_block(spec, state):
+def test_invalid_similar_proposer_slashings_same_block(spec, state):
     slashed_index = spec.get_active_validator_indices(state, spec.get_current_epoch(state))[-1]
 
     # Same validator, but different slashable offences in the same block
@@ -549,7 +549,7 @@ def test_attester_slashing(spec, state):
 
 @with_all_phases
 @spec_state_test
-def test_duplicate_attester_slashing(spec, state):
+def test_invalid_duplicate_attester_slashing_same_block(spec, state):
     if spec.MAX_ATTESTER_SLASHINGS < 2:
         return dump_skipping_message("Skip test if config cannot handle multiple AttesterSlashings per block")
 
@@ -744,6 +744,27 @@ def test_deposit_in_block(spec, state):
     assert state.validators[validator_index].pubkey == pubkeys[validator_index]
 
 
+@with_all_phases
+@spec_state_test
+def test_invalid_duplicate_deposit_same_block(spec, state):
+    validator_index = len(state.validators)
+    amount = spec.MAX_EFFECTIVE_BALANCE
+    deposit = prepare_state_and_deposit(spec, state, validator_index, amount, signed=True)
+
+    yield 'pre', state
+
+    block = build_empty_block_for_next_slot(spec, state)
+
+    # The same deposit of the same validator
+    for _ in range(2):
+        block.body.deposits.append(deposit)
+
+    signed_block = state_transition_and_sign_block(spec, state, block, expect_fail=True)
+
+    yield 'blocks', [signed_block]
+    yield 'post', None
+
+
 @with_all_phases
 @spec_state_test
 def test_deposit_top_up(spec, state):
@@ -831,6 +852,49 @@ def test_attestation(spec, state):
         assert spec.hash_tree_root(state.previous_epoch_participation) == pre_current_epoch_participation_root
 
 
+@with_all_phases
+@spec_state_test
+def test_duplicate_attestation_same_block(spec, state):
+    next_epoch(spec, state)
+
+    yield 'pre', state
+
+    attestation_block = build_empty_block(spec, state, state.slot + spec.MIN_ATTESTATION_INCLUSION_DELAY)
+
+    index = 0
+
+    attestation = get_valid_attestation(spec, state, index=index, signed=True)
+
+    if not is_post_altair(spec):
+        pre_current_attestations_len = len(state.current_epoch_attestations)
+
+    # Add to state via block transition
+    for _ in range(2):
+        attestation_block.body.attestations.append(attestation)
+    signed_attestation_block = state_transition_and_sign_block(spec, state, attestation_block)
+
+    if not is_post_altair(spec):
+        assert len(state.current_epoch_attestations) == pre_current_attestations_len + 2
+        # Epoch transition should move to previous_epoch_attestations
+        pre_current_attestations_root = spec.hash_tree_root(state.current_epoch_attestations)
+    else:
+        pre_current_epoch_participation_root = spec.hash_tree_root(state.current_epoch_participation)
+
+    epoch_block = build_empty_block(spec, state, state.slot + spec.SLOTS_PER_EPOCH)
+    signed_epoch_block = state_transition_and_sign_block(spec, state, epoch_block)
+
+    yield 'blocks', [signed_attestation_block, signed_epoch_block]
+    yield 'post', state
+
+    if not is_post_altair(spec):
+        assert len(state.current_epoch_attestations) == 0
+        assert spec.hash_tree_root(state.previous_epoch_attestations) == pre_current_attestations_root
+    else:
+        for index in range(len(state.validators)):
+            assert state.current_epoch_participation[index] == spec.ParticipationFlags(0b0000_0000)
+        assert spec.hash_tree_root(state.previous_epoch_participation) == pre_current_epoch_participation_root
+
+
 # After SHARDING is enabled, a committee is computed for SHARD_COMMITTEE_PERIOD slots ago,
 # exceeding the minimal-config randao mixes memory size.
 # Applies to all voluntary-exit sanity block tests.
@@ -866,7 +930,7 @@ def test_voluntary_exit(spec, state):
 
 @with_all_phases
 @spec_state_test
-def test_double_validator_exit_same_block(spec, state):
+def test_invalid_duplicate_validator_exit_same_block(spec, state):
     validator_index = spec.get_active_validator_indices(state, spec.get_current_epoch(state))[-1]
 
     # move state forward SHARD_COMMITTEE_PERIOD epochs to allow for exit