The Armorsmith is your basic armor tower and is directly build by your builder.

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

Armorsmith

Armorsmith Basic

Increases the current Armor by 1.

Stats
Cooldown5
Range500
Build cost20 G
Total cost20 G

Upgrades into:

Armorsmith
Armorsmith Rank 2
Armortrainer
Armortrainer
Chainarmor
Chainarmor