Set (Imbuements):
Mage Hat (Imbuements: Mana Leech Level 3 and Magic Level Level 3)
Earthmind Raiment
Gill Legs
Pairs of Dream Walkers or Terra Boots
Umbral Master Spell Book or Brain in a Jar or Shoulder Plate
Butterfly Ring
Enchated Theurgic Amulet or Gill Necklace
Rod of Destruction or Wand of Destruction (Imbuements: Critical Chance Level 3 and Mana Leech Level 3)
Monsters:
High Voltage Elemental, is easy monster to kill so you dont think to much on it.
Cave Devourer, have 4/7 Earth Elemental attacks.
Tunnel Tyrant, have 1/5 Earth Elemental attack.
So the set is focus on get protection from distance attacks (Majority Earth Elemental) and Magic Level to deal more damage and kill more faster, all because you need run away from the creatures.