Whenever a creature you control attacks, you may put a quest counter on Beastmaster Ascension.As long as Beastmaster Ascension has seven or more quest counters on it, creatures you control get +5/+5.
, Exile Surveyor's Scope: Search your library for up to X basic land cards, where X is the number of players who control at least two more lands than you. Put those cards onto the battlefield, then shuffle.
FlyingWhenever Kaalia of the Vast attacks an opponent, you may put an Angel, Demon, or Dragon creature card from your hand onto the battlefield tapped and attacking that opponent.
FlyingAs Thief of Blood enters, remove all counters from all permanents. Thief of Blood enters with a +1/+1 counter on it for each counter removed this way.
FlyingWhen Derevi, Empyrial Tactician enters and whenever a creature you control deals combat damage to a player, you may tap or untap target permanent.: Put Derevi onto the battlefield from the command zone.
HexproofAs long as Siege Behemoth is attacking, for each creature you control, you may have that creature assign its combat damage as though it weren't blocked.