Blazing Crescendo

A +3-power instant that can yield a delayed extra card is testable in creature-heavy spell decks, but it is far less reliable than Opt when opponents answer the target.

Could be wrong if Dense spell-payoff support or an exceptionally favorable combat-focused Standard could make its card-neutral package a regular inclusion.

Izzet Aggro can exploit both the pump and spell count, but two mana is a major cost beside Pioneer’s efficient one-mana threats and interaction.

Could be wrong if If the deck values burst damage over removal, the delayed card access may justify multiple copies.

Izzet Prowess is the credible home, but this is substantially slower and more target-dependent than Modern’s usual cheap spells; it is a plausible low-count test.

Could be wrong if High enough prowess payoff density could make the combined +3/+1 and spell trigger worth the two-mana investment.

Legacy combat is too efficient and interactive for a two-mana targeted trick; delayed random card access does not approach the rate of its premier cantrips.

Could be wrong if A highly focused red creature shell could use it as redundant burst damage, though no supplied evidence establishes one.

Red creature decks can use the sizable combat swing and potential extra card, but it competes poorly with direct damage such as Lightning Bolt and can be blown out by removal.

Could be wrong if A spells-and-creatures build that consistently converts the pump into lethal damage could make it a recurring role-player.

It is a serviceable one-shot buff with delayed card access for Voltron or combat-trigger decks, but is too small and replaceable for broad optimized adoption.

Could be wrong if A commander that strongly rewards targeting creatures or casting instants could raise its value substantially.

A +3/+1 instant wins many combats, and the next-turn play window often recoups the card; abundant revealed token mentions should provide targets.

Could be wrong if Unknown speed, removal density, and mana demands may make the exiled card harder to deploy or punish target-dependent tricks.