Buy @ TCGplayer
{1}{R}, Sacrifice a land: Put a +1/+1 counter on Goblin Razerunners.
At the beginning of your end step, you may have Goblin Razerunners deal damage equal to the number of +1/+1 counters on it to target player or planeswalker.
If Goblin Razerunners leaves the battlefield after its ability triggers but before it resolves, the amount of damage it deals is equal to the number of +1/+1 counters that were on it as it last existed on the battlefield.
You don't count how many +1/+1 counters are on Goblin Razerunners until its triggered ability resolves.
