Planar Collapse
Enchantment
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.
With heavy heart, Urza doused one world's light to rekindle another's.
rare · #18 · ulg
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Rank supplied by Scryfall from EDHREC; it may lag behind EDHREC. Deck counts and synergy percentages are not included.