Ilharg, The Raze-Boar

Trample
Whenever Ilharg, the Raze-Boar 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, the Raze-Boar dies or is put into
exile from the battlefield, you may put it into
its owner’s library third from the top.
Rider Servant, summoned in the Holy Grail War.