These sets include two pieces and grant a special ability when combined, perfect for adding another power to your arsenal and mixing with other items to maximize your stats. A powerful subgroup of dungeon sets dropped by bosses are known as monster sets, monster helm sets, or monster heads. 3000 spell damage will hit harder than 2000 spell damage and 1000 penetration. Remember you can get spell penetration through CP (I recommend this) but you cannot get spell damage directly from CP. There are different types of sets, including craftable (crafting being a key concept to get to grips with in the game), dungeon, and mythic. So, some spell penetration is better than no spell penetration, but a large amount of spell damage is better than some penetration. RELATED: How To Play Elder Scrolls Online In Chronological Order With 12 equipment slots available to you, it is possible to mix and match pieces from different sets to suit your needs. Sets include up to five pieces many have fewer. Sets are groups of matching items that provide bonuses to your character when combined with other pieces. With five expansions and 18 DLCs, The Elder Scrolls Online has grown considerably since its inception and includes hundreds of items, weapons, and armor to aid you in your adventures.