Roshia, elf princess

Hexproof, liflink
{t}{g}{3} Target green card you control gains
vigilance and cant be blocked this turn, put a
+1+1 counter on Roshia, elf princess.
At the beginning of your end step you may
sacrifice Roshia, elf princess, if you do so you
gain {x} life where {x} is the amount of +1+1
counters on Roshia, elf princess.