Vivi Ornitier's effect is so good, and can be copied onto other creatures (something Izzet Cauldron decks do in Standard), so they too can provide mana to make for explosive turns where you can play your entire hand and draw a bunch of cards
While its one of the most difficult to play, its also the most rewarding
Capture the quenchiest cards of unforgettable allies, hybrid animals, and fearsome foes across the four nations
By the way, Fatal Push will always be a pillar of the format, a great efficient card and the premium removal for all the decks that cant afford to go red
His crowning achievement, he'll add with a grin, is a hedron plucked from the highest point of the Akoum Skyclave
This is a Sorcery card featured in the Innistrad expansion that allows the player to return two random cards from their graveyard back into their hand