Magmasaur | Magic: The Gathering
Formats Magmasaur is Legal in
Official Oracle Text for Magmasaur
At the beginning of your upkeep, you may remove a +1/+1 counter from Magmasaur. If you don't, sacrifice Magmasaur and it deals damage equal to the number of +1/+1 counters on it to each creature without flying and each player.