Walking Ballista

When Celes enters, discard any number of cards, then draw that many cards plus one. Whenever one or more other creatures you control enter, if one or more of them entered from a graveyard or was cast from a graveyard, put a +1/+1 counter on each creature you control.

Haste When Cloud enters, attach up to one target Equipment you control to it. Whenever Cloud attacks, draw a card for each equipped attacking creature you control. Then if Cloud has power 7 or greater, create two Treasure tokens.

Lifelink Throw Wide the Gates — Whenever you cast a noncreature spell, you may pay X life, where X is that spell's mana value. If you do, create a 1/1 colorless Hero creature token and put X +1/+1 counters on it. Do this only once each turn.

Trance — At the beginning of combat on your turn, mill two cards. Terra gains flying until end of turn. Whenever Terra deals combat damage to a player, you may pay 2. When you do, return target creature card with power 3 or less from your graveyard to the battlefield tapped.

At the beginning of combat on your turn, you may move a counter from target creature you control onto a second target creature you control. Cheer — Whenever one or more creatures you control with counters on them deal combat damage to a player, you may draw a card and proliferate. Do this only once each turn.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Whenever one or more creatures you control with power 7 or greater deal combat damage to a player, untap all creatures you control. If it's the first combat phase of your turn, there is an additional combat phase after this phase.

Vigilance At the beginning of each end step, if a player lost 4 or more life this turn, you draw a card. Whenever you cast a noncreature spell with mana value 3 or greater, Y'shtola deals 2 damage to each opponent and you gain 2 life.

Grand Summon — T: Add one mana of any color. When you next cast a creature spell this turn, that creature enters with two additional +1/+1 counters on it. Whenever another permanent you control is put into a graveyard from the battlefield, if it had one or more counters on it, you may put that number of +1/+1 counters on target creature.