Catastrophic Eruption

Foretell {3}{r}{r}{r}

At the beginning of each player’s upkeep, that
player may put a doom counter on Cataclysmic
Eruption or remove a doom counter from it. Then
if it has six or more doom counters on it, sacrifice Cataclysmic Eruption. When you do, destroy all
lands on the battlefield. Cataclysmic Eruption deals
8 damage to all creatures and players.