Oracle

Creature - Elemental 6 / 6

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.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

1/25/2019
The number of +1/+1 counters among creatures you control is counted only as Rumbling Ruin’s ability resolves. The set of creatures that can’t block is constantly updated as their power changes, but the number against which their power is compared doesn’t change later in the turn, even if the number of +1/+1 counters among your creatures changes.

1/25/2019
Once a creature with high enough power has blocked, changing the power of the blocking creature won’t remove the blocking creature from combat or cause the creature it blocked to become unblocked.

1/25/2019
If there are no +1/+1 counters on creatures you control as Rumbling Ruin’s ability resolves, creatures with power 0 or less can’t block this turn.

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