Unholy Officiant

The math is the whole conversation. Five mana to add a single +1/+1 counter is one of the least efficient scaling rates ever stapled to a one-drop: moving from a 1/2 to a 3/4 costs ten mana past the casting cost, and the counters carry no keyword, no trigger, nothing but raw stats. That puts the activation at the very floor of the "mana sink" pattern, the class of small creatures whose only job is giving late-game flood somewhere to drain. Vigilance is the concession that keeps the body relevant while it waits: it can hold a defensive point and still swing in, so the counters accrete on a creature already earning its keep rather than one parked at home. This is built for the slow texture of a grinding aggro-attrition shell that expects to survive into turns where its lands would otherwise sit idle. There is no combo window, no evasion payoff, no counter-matters synergy baked in; the price is set deliberately high enough that the ability is never a plan, only insurance against running out of things to do. Cards shaped this way exist to smooth the top of a curve, and the honest read is that the ceiling is modest by construction.