
TrampleTrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking.
Whenever Ilharg attacks, you may put a creature card from your hand onto the battlefield tapped and attacking. Return that creature to your hand at the beginning of the next end step.
When Ilharg diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying. or is put into exile from the battlefield, you may put it into its owner's library third from the top.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.