Enchantment, 2GG (4)
Rare
At the beginning of your upkeep, if you control twenty or more creatures, you win the game.
"If our foes will not listen to words, perhaps hooves and claws will make them take notice."
—Seton, centaur druid
Illus. Greg & Tim Hildebrandt

10/4/2004: To win, you must control 20 or more creatures both at the beginning of upkeep and when it resolves.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander