Kaza, Roil Chaser [Zendikar Rising]

Set: Zendikar Rising Type: Legendary Creature — Human Wizard Rarity: Rare Cost: {U}{R} Flying, haste{T}: The next instant or sorcery spell you cast this turn costs {X} less to cast, where X is the number of Wizards you control as this ability resolves. "What sort of life is that, huddling in the familiar and safe? No thanks. Put me right in the center of the action."