if damage would be dealt to lichenthrope, put that many -1/-1 counters on it instead.
at the beginning of your upkeep, remove a -1/-1 counter from lichenthrope.
if damage would be dealt to lichenthrope, put that many -1/-1 counters on it instead.
at the beginning of your upkeep, remove a -1/-1 counter from lichenthrope.