Legendary creatures you control get +X/+X, where X is the number of legendary creatures you control. Whenever you cast a legendary spell from your hand, exile cards from the top of your library until you exile a legendary nonland card with lesser mana value. You may cast that card without paying its mana cost. Put the rest on the bottom of your library in a random order.

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.

Commander ninjutsu {U}{B} ({U}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand or the command zone tapped and attacking.) Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's mana value.

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.

Flying Whenever Sin enters or attacks, exile a permanent card from your graveyard at random, then create a tapped token that's a copy of that card. If the exiled card is a land card, repeat this process.

Vigilance (Attacking doesn't cause this creature to tap.) When Sephiroth enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, put a +1/+1 counter on Sephiroth.