Powerful Assault is an item set sold by Tel Var merchants in the Imperial City. Tel Var Armorers sell specific pieces of superior quality gear, while Tel Var Greater Armorer Merchants sell epic quality items. Tel Var Lockbox and Tel Var Greater Lockbox merchants sell boxes that contain random items from the specific set. Pieces are Aldmeri Dominion, Daggerfall Covenant, or Ebonheart Pact Style in Medium Armor.
2 items: Adds 28-1206 Maximum Health
3 items: Adds 25-1096 Maximum Stamina
4 items: Adds 3-129 Weapon Damage
5 items: When you cast an Assault ability, you and up to 3 allies within 15 meters gain 14-164 Weapon and Spell Damage for 15 seconds.
The set consists of medium armor and jewelry in all slots, as well as weapons and shields of all types.