Killian, Decisive Mentor

Each creature that's enchanted by an Aura you control can't attack you or planeswalkers you control.

At the beginning of your end step, each opponent loses X life and you gain X life, where X is the number of Auras you control.

Whenever Sokka and Suki or another Ally you control enters, attach up to one target Equipment you control to that creature.

Whenever an Equipment you control enters, create a 1/1 white Ally creature token.

When this creature enters, suspect up to one other target creature you control. (A suspected creature has menace and can't block.)

Whenever one or more suspected creatures you control attack, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)

Enchanted creature gets +4/+4.

Whenever an enchanted creature or enchantment creature you control attacks, draw a card.

Flying

Whenever a player attacks one of your opponents, if that opponent has more life than another of your opponents, that attacking player draws a card and you put two +1/+1 counters on a creature you control.

Menace

When Neva enters, return target creature or enchantment card from your graveyard to your hand.

Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on Neva, then scry 1.