Jadecraft Artisan

The pump is a one-time, entry-only trigger that expires at end of turn, which locks this into a preemptive tempo role rather than a reactive one: you drop the body on your own turn, so the +2/+2 lands before combat and is gone by the next. That points the effect in one honest direction. Aim it at a creature that already survived the crackback and threaten two extra points the turn the Artisan arrives; the buff cannot help the Artisan attack itself, since a fresh 3/3 with no haste sits out the turn it enters and the bonus is spent by the time it can swing. There is no death-trigger payoff, no recursion hook, no targeting reach past "creature." What it buys is reliability: a creature deck that wants its four-drops to do slightly more than stand in the road gets a serviceable body plus a single swing of combat math on the way down, with no build-around tax and nothing to assemble. It is plain by intent, a midrange creature that tilts one fight in your favor as it enters and then reverts to an ordinary 3/3 for however long it stays on the board.