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Using his Mangekyou Sharingan, Eliyahu can implant false memories and alter true memories of those whom have looked into his eyes. He uses this in combat to implant a quick memory in his opponent's mind, making them "remember" him doing something completely contrary to what actually occured, allowing him to cover up his actions and his techniques. He can also erase the memories altogether of him performing a technique or doing something in combat, preventing his secrets from being revealed. It appears that the more complex the memory he is trying to invent or alter, the longer he must have eye contact with his opponent.