Inner-Flame Acolyte

Pay a single red mana and the 2/2 body never touches the battlefield for more than the length of a trigger: the creature enters, hands a target +2/+0 and haste, and is sacrificed before it can block or attack. That evoke line is the card's true shape, a pump-and-haste effect that gives a freshly cast threat the speed to swing immediately or shoves an existing attacker through a smaller blocker. Routing the trick through a creature spell is what gives it reach: anything that cares about a creature entering or leaving the battlefield gets fed, and you never have to keep the Elemental around to collect those triggers. The limiting factor is timing. With no flash, the spell resolves only at sorcery speed, so the haste payoff arrives on your own main phase ahead of your own attack, not as a combat surprise on the opponent's turn. Within that constraint the +2/+0-and-haste clause is the whole reason to run it, and the 2/2 becomes a tax you pay only on the uncommon turns when a leftover body is worth more than the two mana evoke saves you. Most of the time it is not, which is exactly why the evoke cost exists: to let you skip the body and buy the effect alone.