Warden of the Grove 166 (Tarkir: Dragonstorm)

At the beginning of your end step, put a +1/+1 counter on this creature. Whenever another nontoken creature you control enters, it endures X, where X is the number of counters on this creature. (Put X +1/+1 counters on the creature that entered or create an X/X white Spirit creature token.)

NM - $4.00
LP - $3.20
MP - $2.40
HP - $1.60
DMG - $1.50