Mana Screw [Unhinged] Aura Set: Limited Edition Alpha Type:

Set: Limited Edition Alpha Type: Enchantment Rarity: Common Cost: {2}{B}{B}

For example

Set: New Phyrexia Type: Legendary Creature — Praetor Rarity: Mythic Cost: {8}{U}{U} Flash At the beginning of your end step

"Stop thinking like an artificer

Catastrophes happened so often at the mana rig that the viashino language had a special word to describe them

Mana Screw [Unhinged] Aura Set: Limited Edition Alpha Type:Set: Unhinged Type: Artifact Rarity: Uncommon Cost: {1} {1}: Flip a coin. If you win the flip, add {C}{C} to your mana pool. Activate this ability only any time you could cast an instant. There was no darker or more evil creation in all the multiverse than that of the mana screw.