At the beginning of combat on your turn, target creature you control with a +1/+1 counter on it gains menace until end of turn. Exhaust — {5}: Put two +1/+1 counters on this creature.
2025-10-02
The creature you target must have a +1/+1 counter on it when the ability goes on the stack at the beginning of combat. You cannot put the counter on it in response.