Chaos Orb [Unlimited Edition] Zombie Minotaur Warrior Nightmare's power and toughness are

Nightmare's power and toughness are each equal to the number of Swamps you control

" —Elvish hymn

If you control an Urza's Mine and an Urza's Power-Plant

Set: EX: Hidden Legends Type: Grass Rarity: Ultra Rare Retreat cost: Colorless

Set: EX: Delta Species Type: Water

Chaos Orb [Unlimited Edition] Zombie Minotaur Warrior Nightmare's power and toughness areSet: Unlimited Edition Type: Artifact Rarity: Rare Cost: {2} {1}, {T}: If Chaos Orb is on the battlefield, flip Chaos Orb onto the battlefield from a height of at least one foot. If Chaos Orb turns over completely at least once during the flip, destroy all nontoken permanents it touches. Then destroy Chaos Orb.