moloch´s torment

[malopezgrom2]

Can I spend 10 mana to deal 10 direct damage to a creature that has at least one curse my control attached?

[Drealin]

Short answer: No.

Long answer: The card specifically says that you may deal 1 damage.  It doesn't say that you can do it multiple times.  There is no Spell, or ability, in the game that allows you to use/activate it multiple times during the same step.  The Upkeep phase is 1 step, and does not have multiple parts/steps where you could use Moloch's Torment.

[baronzaltor]

For it to work that way the card would have to read "Pay X mana to do X damage" instead of Pay 1 to do 1.

[malopezgrom2]

Thank you so much