Homunculation

Goldbrick (You may pay {0} instead of paying any or all of the colored mana costs of this spell. If you do, the next spell you cast costs that much more, and, until then, you can't cast spells using alternative costs.)
Create a token copy of target token permanent except that, if it's a creature, its a Homunculus with base power and toughness are each 5 minus the amount of mana not paid to cast this spell.