Planar Collapse (Urza's Legacy #18)

Planar Collapse {1}{W}

Enchantment

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.

Illustrated by Mark Zug

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Notes and Rules Information for Planar Collapse:
  • Only the English version of a Magic card receives Oracle updates and errata. View this card in English. (Scryfall note)
  • 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. (2004-10-04)
  • The ability is not optional. (2004-10-04)
  • If this card is not on the battlefield when the ability resolves, then you can’t sacrifice it. However, you still destroy all creatures. (2010-06-15)