Nebrus'Feltartly

Flying, Ward{3}, Hexproof
When Nebrus'Feltartly add {x} 1/1 counters to each creature you control. At the beginning of your end step, if Nebrus'Feltartly attacked this turn, tap up to one creature your opponent controls. {t} exile a card from your graveyard, add 1/1 counters to your creatures equal to the exiled cards mana cost.