You can put your opponent's monsters that are destroyed by battle with other Psychic-Type monsters on top of their owner's Deck instead of sending them to the Graveyard. When this card is destroyed by a card effect, this card's controller takes damage equal to its original ATK.
Trying to, but it needs to be taken by an opponents card effect for it to work. I've tried Shien's spy and it does not work.
An interesting effect I've been trying in my Psychic deck. You can choose to send your opponents monsters to the top of their deck after they are destroyed. This can really be disruptive to some deck strategies