At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice Planar Collapse and destroy all creatures. They can’t be regenerated.
With heavy heart, Urza doused one world's light to rekindle another's.
If this card is not on the battlefield when the ability resolves, then you can’t sacrifice it. However, you still destroy all creatures.
04-10-2004
wotc
This ability does not trigger at all if there are not 4 or more creatures on the battlefield. It also checks this at the start of resolution and does nothing if this is not still true.
04-10-2004
wotc
The ability is not optional.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
