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.
Near Mint - $0.90
Near Mint Non-English - $0.90
Lightly Played - $0.80
Lightly Played Non-English - $0.80
Played - $0.70
Played Non-English - $0.70
Heavily Played - $0.60
Heavily Played Non-English - $0.60
Damaged - $0.50
Damaged Non-English - $0.50