Viashino Firstblade

The entire power budget is front-loaded into a single combat step. It lands as a 4/4 with haste, swings for four the turn it arrives, and then deflates to a 2/2 that has to survive whatever comes back. The +2/+2 is a clean burst-and-fade: temporary by design, here to manufacture exactly one big attack and nothing after it. That is the math an aggressive red-white shell wants, where four damage on the turn it enters is worth more than what is left standing the turn after, and where creatures are not expected to live long anyway. The tension is whether that one swing is enough. Connect for four into an open board and the body shrinking back hardly matters; resolve it into a developed defense and you are holding a fragile two-power blocker that spent its whole value on a hit that did not close the game. It rewards a deck that already knows it is racing and treats the postcombat 2/2 as a rounding error, not a creature it needs to protect.