The Priest is your basic health tower and is directly build by your builder.

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

Priest

Priest Basic

Increases the current Hitpoints by 1.

Stats
Cooldown1
Range650
Build cost10 G
Total cost10 G

Upgrades into:

Priest
Priest Rank 2
Witchdoctor
Witchdoctor
Chainhealth
Chainhealth