Limited Edition (Alpha) played up this relationship by making a cycle of color hoserscards that mechanically punish an opponent for playing a specific enemy colorand one card that allowed an ally to help: Legends introduced multicolor cards
Lorehold Spirit (Red/White) Leave the graveyard, buff spirits Helmed by Quintorious, History Chaser, this Planeswalker can create Spirit Tokens and buff them with double strike and vigilance
The creature type was introduced in 2009's Zendikar, with the majority of Ally cards being printed during the original Zendikar block, meaning they have almost exclusively appeared in Zendikar sets so far
Manual Challenges are everything else
Its also great for cheating out big creatures in self-mill or dredge decks
You'll rarely feel bad about drawing this, because at nearly every point in the game, it will give you something useful