Ancestral Recall draws you cards or forces your foe to, at instant speed, for by far the best base rate in the game, and with exactly zero drawbacks
Not the strongest of removal spells, but Self-Destruct is great at sacrificing a creature thats already about to die, and you might even have some fun with Jumbo Cactuar
Sin, Spira's Punishment Squall, SeeD Mercenary These Through the Ages cards are also worth splashing: Winota, Joiner of Forces Bruse Tarl, Boorish Herder Kenrith, the Returned King Kraum, Ludevic's Opus Muldrotha, the Gravetide Mythics As with rares, the mythics youll want to splash are basically just bombs
At the beginning of your end step, create a tapped 0/1 black Wizard creature token with "Whenever you cast a noncreature spell, this token deals 1 damage to each opponent." Then if you control four or more Wizards, transform Kuja