Rumbling Ruin
Rumbling Ruin
When Rumbling Ruin enters the battlefield, count the number of +1/+1 counters on creatures you control. Creatures your opponents control with power less than or equal to that number can't block this turn.
The Rubblebelt grows restless.
illus. Jakub Kasper # 112/259
Oracle Text
When Rumbling Ruin enters the battlefield, count the number of +1/+1 counters on creatures you control. Creatures your opponents control with power less than or equal to that number can't block this turn.
When Rumbling Ruin enters the battlefield, creatures you control can't be blocked this turn.
And that means:
When Rumbling Ruin enters the battlefield, any player may reveal Fog. If they do not, you win the game.
ETA: Nice Rumbling Slum throwback.