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Planar Collapse [Urza's Legacy]
| Set: | Urza's Legacy |
| Type: | Enchantment |
| Cost: | {1}{W} |
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.
