Ms. Puff, Overworked Teacher

At the start of combat on your turn put a
training counter on target creature.
Boating School - Remove five counters from a
creature you control: Create a white Aura enchantment token named Boater's License with "whenever one or more +1/+1 counters would
be put on this creature, that many plus one is
put on it instead" attached to that creature.
"I'm not ready."