![Planar Collapse (18) [Urza's Legacy]](http://alwaysgames.ca/cdn/shop/files/6364_in_1000x1000_2dbfd0af-bb68-43a2-986a-15601c35f03d.jpg?v=1771571128&width=672)
![Planar Collapse (18) [Urza's Legacy]](http://alwaysgames.ca/cdn/shop/files/6364_in_1000x1000_2dbfd0af-bb68-43a2-986a-15601c35f03d_1024x.jpg?v=1771571128)
Description
| Set: | Urza's Legacy |
| Type: | Enchantment |
| Rarity: | rare |
| Cost: | {1}{W} |
At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice this enchantment and destroy all creatures. They can't be regenerated.
| Set: | Urza's Legacy |
| Type: | Enchantment |
| Rarity: | rare |
| Cost: | {1}{W} |