Backup Agent

When Backup Agent enters, put a +1/+1 counter on target creature.

Wanderer's Intervention

Wanderer's Intervention deals 4 damage to target attacking or blocking creature.

Militia Rallier can't attack alone.
Whenever Militia Rallier attacks, untap target creature.

Flying
When Angelic Quartermaster enters, put a +1/+1 counter on each of up to two other target creatures.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Flying
When this creature enters, you gain 1 life and draw a card.

Flying
When Pillardrop Rescuer enters, return target creature card with mana value 3 or less from your graveyard to your hand.

Star Pupil enters with a +1/+1 counter on it.
When Star Pupil dies, put its counters on target creature you control.