Mana Vortex

Enchantment -
When you cast Mana Vortex, counter it unless you sacrifice a land. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands on the battlefield, sacrifice Mana Vortex.

Enchantment -
When you cast this spell, counter it unless you sacrifice a land. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands on the battlefield, sacrifice Mana Vortex.

Enchantment -
When you cast Mana Vortex, you may sacrifice a land. If you don't, counter Mana Vortex. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands on the battlefield, sacrifice Mana Vortex.

Enchantment -
When you cast Mana Vortex, counter it unless you sacrifice a land. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands on the battlefield, sacrifice Mana Vortex.

Enchantment -
When you play Mana Vortex, you may sacrifice a land. If you don't, counter Mana Vortex. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands in play, sacrifice Mana Vortex.

Enchantment -
When you cast Mana Vortex, you may sacrifice a land. If you don't, counter Mana Vortex. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands on the battlefield, sacrifice Mana Vortex.

Enchantment -
When Mana Vortex comes into play, sacrifice it unless you sacrifice a land. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands in play, sacrifice Mana Vortex.

Enchantment -
When you play Mana Vortex, you may sacrifice a land. If you don't, counter Mana Vortex. <CR>
At the beginning of each player's upkeep, that player sacrifices a land. <CR>
When there are no lands in play, sacrifice Mana Vortex.