Contamination [Urza's Saga] Unlimited Edition create a 5/5 red Dragon

create a 5/5 red Dragon creature token with flying

Roar of the World is in the command zone or on the battlefield

and the second player controls the first player during the first player's next turn

Creatures those players control that can block additional creatures may likewise be put into additional piles

Each player antes the top card of their library

Contamination [Urza's Saga] Unlimited Edition create a 5/5 red DragonSet: Urza's Saga Type: Enchantment Rare Cost: {2}{B} At the beginning of your upkeep, sacrifice Contamination unless you sacrifice a creature. If a land is tapped for mana, it produces {B} instead of any other type and amount.