Terrorising Sandworm

+1/+1 counters remain on Terrorising Sandworm as it changes zones.
{t}: Exile Terrorising Sandworm. Return it to the battlefield at the beginning of the next end step. When you do, deal damage equal to Terrorising Sandworm's power to target creature or player. If this damage causes a creature or planeswalker to die or a to player lose the game, put a +1/+1 counter on Terrorising Sandworm.