Dartscale School

Dartscale School enters the battlefield with X
+1+1 counters.
If damage would be dealt to Dartscale School
while it has a +1+1 counter on it, prevent that
damage and and remove that many +1+1
counters from it. For each counter removed this
way, create a 1/1 blue School token with:
Sacrifice three school tokens: search your library
for a card named Dartscale School and put into
your hand.