Improvising Aerialist

Survival — At the beginning of your second main phase, if this creature is tapped, put a flying counter on it. This ability triggers only once.

Survival — At the beginning of your second main phase, if this creature is tapped, put a flying, lifelink, or +1/+1 counter on it.

Whenever this creature or another creature you control dies, if it had counters on it, put those counters on up to one target creature.

Survival — At the beginning of your second main phase, if this creature is tapped, put a +1/+1 counter on target creature.

Survival — At the beginning of your second main phase, if this creature is tapped, draw a card if you control a Glimmer creature. If you don't control a Glimmer creature, create a 1/1 white Glimmer enchantment creature token.

Survival — At the beginning of your second main phase, if this creature is tapped, exile up to one target card from a graveyard.

As long as there are three or more cards exiled with this creature, it gets +3/+3 and has hexproof. (It can't be the target of spells or abilities your opponents control.)

Flying

At the beginning of combat on your turn, target creature you control perpetually gets +1/+0. Then choose a creature card in your hand. It perpetually gets +1/+0.