Equestria may not be a plane in the cosmology of Magic: The Gathering, but the Mane Six (plus Princess Luna and Discord) are available thanks to the Ponies: The Galloping secret lairs
The colorless columns heavily impact how players will approach drafting your Cube
Font of Magic is excellent for basically any Izzet spells deck, from Mizzix to Veyran, and Gale is solid value whether in the zone or in the 99
Whenever you cast a red spell, Aragorn, the Uniter deals 3 damage to target opponent
Samwise Gamgee Combo (5 players): Samwise Gamgee, Cauldron Familiar, and a sacrifice outlet provides infinite Cauldron Familiar triggers, while Collected Company and Chord of Calling help assemble all the pieces
The guild connects with primal rage and the rejection of civilization