The List

Creature — Kor Soldier Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain first strike until end of turn.

Kor Bladewhirl

Creature — Minotaur Warrior Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain trample until end of turn.

Ondu Champion

Creature — Elf Warrior Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control get +2/+2 until end of turn.

Tajuru Warcaller

Battle for Zendikar Promos

Creature — Human Knight Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain indestructible until end of turn.

Hero of Goma Fada

Creature — Human Scout Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain lifelink until end of turn.

Lantern Scout

Battle for Zendikar

Rally — Whenever this creature or another Ally you control enters, tap target creature an opponent controls.

Kor Entanglers

Rally — Whenever this creature or another Ally you control enters, creatures you control gain vigilance until end of turn.

Makindi Patrol

Legendary Creature — Kor Ally

Haste
Rally — Whenever Munda or another Ally you control enters, you may look at the top four cards of your library. If you do, reveal any number of Ally cards from among them, then put those cards on top of your library in any order and the rest on the bottom in any order.

Munda, Ambush Leader

Creature — Vampire Cleric Ally

Rally — Whenever this creature or another Ally you control enters, each opponent loses 1 life and you gain 1 life.

Kalastria Healer

Creature — Goblin Scout Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain haste until end of turn.

Chasm Guide

Creature — Human Shaman Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain menace until end of turn. (A creature with menace can't be blocked except by two or more creatures.)

Firemantle Mage

Rally — Whenever this creature or another Ally you control enters, creatures you control get +1/+1 until end of turn.

Tajuru Beastmaster

Plant

Creature — Elf Druid Ally

Rally — Whenever this creature or another Ally you control enters, you may pay {1}. If you do, create a 1/1 green Plant creature token.

Grovetender Druids

Creature — Human Soldier Ally

Rally — Whenever this creature or another Ally you control enters, creatures you control gain double strike until end of turn.