Makeshift Battalion

Battalion — Whenever Makeshift Battalion and at least two other creatures attack, put a +1/+1 counter on Makeshift Battalion.

Healer's Hawk

Exile target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying, vigilance
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Enchant creature
Enchanted creature gets +2/+2.

Whenever another creature you control enters, you gain 1 life.

Whenever another creature or planeswalker you control dies, put a +1/+1 counter on Rising Populace.

Enchant creature
Enchanted creature gets +3/+2 and has vigilance.

Lifelink
When Charmed Stray enters, put a +1/+1 counter on each other creature you control named Charmed Stray.

Put a +1/+1 counter on target creature. That creature gains first strike until end of turn. You gain 2 life.