Quicksilver Amulet

{4} · Artifact

{4}, {T}: You may put a creature card from your hand onto the battlefield.

Motor: se resuelve a mano

Rulings (3)

You don't pay any costs of that creature card, including additional costs.
Wizards of the Coast · 2011-09-22
Putting the card onto the battlefield is optional. When the ability resolves, you can choose not to.
Wizards of the Coast · 2007-05-01
Any 'X' in the creature's cost is treated as zero.
Wizards of the Coast · 2004-10-04