Yeva's Forcemage

Folding a pump spell onto a creature body means the +2/+2 arrives without spending a separate card: you get a 2/2 and the buff in one play, and the bonus survives even if this creature dies afterward, since the trigger has already gone on the stack independent of its source. This is the reusable shape green has leaned on for ages, where flicker effects turn the enters trigger into repeatable pressure a one-shot instant cannot match. The catch lives in the timing. Because the bonus is bound to the moment the creature enters the battlefield, it resolves only after the creature spell itself has resolved, which in practice means sorcery speed: you cannot bank it for the combat math you actually want, and it telegraphs the trade before blocks are declared. That makes it a tempo tool rather than an ambush, a way to shove a creature past a blocker the same turn this Forcemage hits the table rather than spring a trick mid-combat. The Elf Shaman line and the Yeva connection tie it to a green tribal-and-spells throughline, but mechanically this is the workhorse common-and-uncommon mold green reaches for whenever a set wants attackers that bring their own incremental aggression, no open mana required.