Zalame, Inspiration of Power

Trample (This creature can deal excess combat damage to player or planeswalker it's attacking.)
Whenever Zalameen, Inspiration of Power becomes the target of a bloodrush ability, at the end of this phase you may return the discarded card from your graveyard to your hand and cast it without paying it's mana cost. If you do, it has bloodthirst X, where X is the damage dealt to you