Research the Deep

Kithkin spells and Soldier spells you cast cost 1 less to cast.

If a source would deal damage to a player, you may prevent X of that damage, where X is the number of Clerics you control.

Flying Reinforce 2—2W (2W, Discard this card: Put two +1/+1 counters on target creature.)

Whenever this creature attacks, target creature gets +0/+3 until end of turn.

W, T: Put a +1/+1 counter on target Soldier creature. Each creature you control with a +1/+1 counter on it can block an additional creature each combat.

Changeling (This card is every creature type.) Vigilance

Choose a creature type. Coordinated Barrage deals damage to target attacking or blocking creature equal to the number of permanents you control of the chosen type.

Enchant creature 1W: Put a +1/+1 counter on enchanted creature.