Activate only when a Defense Position monster you control, whose DEF is higher than its ATK, is destroyed by battle. Special Summon up to 2 monsters with the same name as that monster from your Deck in face-up Defense Position.
How to Get
Special summons up to 2 monsters from your deck.
Activation condition could be difficult, especially for decks that focus a lot on offense.
Can only special summon monsters of the same name as the destroyed monster.
Exodia decks filled with weak attack monsters that can be trigger Broken Blocker when they are destroyed. You would then thin your deck and special summon monsters with Draw and search effects. Special summon 2 Dark Mimic LV1 in defense position to turn them into Dark Mimic LV3 during your next standby phase.
Spell Counter decks have a bunch of monsters with high defense. This means that you can use Broken Blocker as an effective way of swarming the field. Swarming the field with these monsters means you can generate Spell Counters quicker and with Magical Citadel of Endymion you will have a way to pass those spell counters around.