Crafters Guild

At the beginning of your upkeep, create a
tapped 1/1 Crafter Creature Token.
Whenever you cast a Artifact Spell,
put one Crafting Counter on each Crafter Token.
Whenever you cast a creature, Untap up to one
Crafter Token.
Use the following only as a Sorcery
{2}{t}: untap Target Crafter Token
{4}{t}: create a 1/1 Crafter Creature Token