• Set for Spell Power (Some kind of robe/cloth; Low armor value)
• Set for Dodge (Some kind of outfit or light armor, perhaps leathers; a bit higher armor value than above)
• Set for increased charges (Not sure how this should look tbh; perhaps decent armor)
• Set for Doublestrike. (Heavy Full plate; best armor value of the 4)

Requires a full 4 piece armor set for bonuses to apply, I don't want mixing and matching.

For Increased Charges, maybe it'd have some energy bubbles attached, like, say, a potion-makers armor?