Wargate is a Sorcery that costs X, Green, White, and Blue, and then allows you to search your library for a permanent card with mana value X or less, put it onto the battlefield, then shuffle. Bant also happens to have a few good ways to recur powerful spells, so you can expect to be seeing a lot of this if you cast it
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Manglehorn is one such card, and while it doesnt see much play at casual tables, it could prove to be one of the best and fairest ways to regulate heavy Treasure usage
Brainstorm + Lion's Eye Diamond + Wheel of Fortune Infinite cards in hand, Infinite draw triggers, Infinite rummaging Noble Purpose + Children of Korlis + Tree of Redemption Win the game Sheoldred, the Apocalypse + Peer into the Abyss Opponents lose infinite life, Near-infinite lifegain, Near-infinite card draw, Near-infinite draw triggers Council's Judgment + Plea for Power (Extra Turn Lock) Exile all opponents' nonland permanents, take all future turns, potential board lock Homeward Path + Council's Judgment (Exile Your Commander) Reset your commander's status (remove counters, enchantments, etc., and recast from command zone for base cost + tax)