Tenacious Pup

The one-time boon is the tell that this is a card built for a digital-only ecosystem, where the game engine can track state that a paper card would need a token, a die, or a memory to represent. The body is a plain green one-drop: a 1/2 that gains a point of life, a stat line nobody builds around. The value lives in the delayed reward, a stored trigger that upgrades exactly one future creature spell with three counters at once. Splitting the payoff into three named counter types rather than a flat buff is the interesting part: the +1/+1 counter attaches alongside the trample and vigilance counters, which each attach as keyword counters, which means they persist on the creature and can be doubled, moved, or proliferated the way any counter can, rather than fading like a one-shot pump. That turns a modest boost into something a counters-matters shell can compound. The friction is that you only get the boon once, and it waits for your next creature to cash in, so the reward wants a follow-up worth upgrading rather than the cheapest body you can find. It is a design that leans entirely on machine-tracked persistent state, the kind of stored conditional trigger that would be a nightmare to adjudicate across a paper table.