Rage — Whenever Gau attacks, put a +1/+1 counter on it.At the beginning of each end step, if a card left your graveyard this turn, Gau deals damage equal to its power to each opponent.
When this enchantment enters, create X 1/1 colorless Hero creature tokens.Light Party — Whenever you attack with four or more creatures, scry 2, then draw a card.Full Party — Whenever you attack with eight or more creatures, those creatures get +4/+4 until end of turn.
Equipped creature has "Whenever this creature attacks, tap target creature defending player controls. If that creature has greater power than this creature, put a number of +1/+1 counters on this creature equal to the difference."Equip
Whenever you cast an instant or sorcery spell, surveil 1.At the beginning of your end step, each opponent may sacrifice a nontoken creature of their choice. Each opponent who doesn't loses 2 life for each instant and sorcery card in your graveyard.
Vigilance, trampleOther modified creatures you control have vigilance and trample. (Equipment, Auras you control, and counters are modifications.)Cosmo Memory — When Red XIII enters, return target Aura or Equipment card from your graveyard to your hand.
LifelinkTrace Aether — Whenever you cast a noncreature spell, you may return target creature card with mana value equal to that spell's mana value from your graveyard to your hand. Do this only once each turn.
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and no matter when it came under your control.)Equip (: Attach to target creature you control. Equip only as a sorcery.)