Urbo, Oakborn Fortress

Defender, reach
When damage is prevented during a combat step,
put +1/+1 counters on Urbo, Oakborn Fortress
equal to the amount of damage prevented.
Remove X +1/+1 counters from Urbo, Oakborn
Fortress: Target creature you control gets
+X/-X until end of turn and can attack this turn
as though it didn't have defender. X can't be 0.