Stone Axe

Trade Cost: 1 Emerald
You may cast this spell for its trade cost instead of its mana cost if a Toolsmith is in your battlefield.
Once this Artifact is on the battlefield you may pay its trade cost to make a copy of it 11 times.
Equip this Artifact to a creature to give it +4/+0 until that creature has attacked or tapped 3 times after this Artifact is equipped.
Chop for wood: {t} equipped creature: roll a d20 and create how ever many wood tokens for what number you get.