Thran Turbine

{1} · Artifact

At the beginning of your upkeep, you may add {C}{C}. This mana can't be spent to cast spells.

Motor: se resuelve a mano

Rulings (1)

Any of this mana that isn’t spent during your upkeep step will be removed before your draw step begins. You cannot save it to be spent on the card you will draw this turn.
Wizards of the Coast · 2011-01-25