Mana Vortex [The Dark]

Mana Vortex [The Dark]Set: The Dark Type: Enchantment Rare Cost: {1}{U}{U} When you cast this spell, counter it unless you sacrifice a land. At the beginning of each player's upkeep, that player sacrifices a land. When there are no lands on the battlefield, sacrifice Mana Vortex.

a spell that would cost {1}{B} to cast costs {2}{B} to cast instead

) Whenever you gain life

Set: Stronghold Type: Creature — Human Druid Rare Cost: {1}{G} {G}

Vulshok mana rituals echo the day when the red sun burst through Mirrodin's surface to take its place in the heavens

her "improvements" to them make her as feared by allies as by enemies

Set: Battle for Zendikar Promos Type: Legendary Creature — Elemental Mythic Cost: {3}{R}{R}{G}{G} Landfall — Whenever a land enters the battlefield under your control

Star of Extinction deals 20 damage to each creature and each planeswalker

Set: Modern Masters 2015 Type: Creature — Human Druid Rare Cost: {G} Exalted (Whenever a creature you control attacks alone

when the living earth blessed all who trod its untamed wilds

But I doubt it

Set: Limited Edition Beta Type: Enchantment — Aura Rare Cost: {1}{G}{G} Enchant land When enchanted land becomes tapped

Set: Commander 2013 Type: Enchantment Rare Cost: {4}{G} If one or more tokens would be created