The Weaponsmith is your basic damage tower and is directly build by your builder.

In this basic form you can further upgrade this tower into:

Weaponsmith

Weaponsmith Basic

Increases the damage with every hit by 1.

Stats
Cooldown5
Range500
Build cost20 G
Total cost20 G

Upgrades into:

Weaponsmith
Weaponsmith Rank 2
Weapontrainer
Weapontrainer
Chainweapon
Chainweapon