Some people will tell you to use skill charms. Offensive skillers add more damage (for you AND merc) then combat. But I'm going to tell you a great tip. Do Not Use Skillers!
Classic Hammer Build
2nd weapons slot: cta & Spirit
1st weapon slot: Hoto & Hoz +Um
Head: Shako + Um
Armor: Enigma (MagePlate for low str req, 1k def=good)
Belt: Arachnid
Gloves: Chance Guards
Boots: War Travs
Rings: Soj & Soj
Amulet: Maras
Charms: 1x Gheeds, 1x Anni, 1x Torch, 10x 7mf Sc
2.8k-3.6k health with bo on
13k hammers
full resist
high defence, high block, lacking hit recovery
My Hammer Build
2nd weapons slot: cta & Spirit
1st weapon slot: Hoto & Spirit (base resi >=40) vortex
Head: Rare Tiara/Diadem (2Pally + 20cast) OR Griffons Diadem (1skill +25cast)
Armor: Enigma (MagePlate for low str req, 1k def=good)
Belt: Arachnid
Gloves: Magefist
Boots: War Travs
Rings: Soj & Soj
Amulet: Crafted (2Pally + 5-20cast)
Charms: 1x Gheeds, 1x Anni, 1x Torch, 10x 7mf Sc
2.8k-3.6k health with bo on
12k hammers, but casts faster (kills quicker, tele's quicker) -> I tested the change in a averaged 20min run before the tier cange, 15minutes averaged after, and better loot!
full resist if high-res equipment, otherwise fire resist will be low and you will need to make up for that with a few charms.
high defence(lower then classic by around 2-4k), medium block, high hit recovery
The Cast Tier requires 125 to make it the the next cast speed. You are able to switch out magefists for chancies if you make 125 without them.