Invoke the Firemind

Izzet's mascot spell, and the cleanest distillation of what the guild was sold on: card advantage and burn from the same X-spell, with the mode locked in the moment you cast it. The split is the whole pitch. Choose to draw when the game is young and the hand is bare; choose damage when the draw matters less than the kill, sending the same investment at an attacker, a blocker, or the opponent themselves. The fixed colored pips on top of X are the price the guild's flavor demands: not a colorless Fireball, not a mono-blue draw engine, but a spell that asks for both halves of Izzet's identity before it lets you commit to only one half of the effect. That double-blue, single-red requirement keeps the rate from running away, and it ties the card to a long line of "do one big thing, scaled by X" designs in the lineage of Stroke of Genius and Fireball without belonging cleanly to either. What it represents is the modal-X spell as guild statement. The flexibility looks like two cards stapled into one slot, but the choice is made when the spell hits the stack, not when it resolves, so your opponent knows which mode is coming and can respond accordingly. At any given casting you are spending all your mana on a single effect; deciding which, and when, is the entire game of the card.