The advantage of having spells from Hexes is that most enemies in the game are not resisntant to Dark Elemental Damage, most are vulnerable to these types of spells, but some of the advantages will slowly fade once you go through the DLCs as most enemies have high elemental resistances. There are weapons that are neither Staves or Chimes which can also be used to cast Hexes such as the Mace of the Insolent. Hexes that are used on Staves tend to deal more damage while the use of Chimes tend to be passive. You will also notice that if a Hex requires more Intelligence than Faith, you would need a Staff to cast that spell, and if it requires more Faith than Intelligence it would require you to equip it on a Chime. The damage of Hexes are influenced by dark elemental damage. Most Hexes would also require more than one attunement slot. Hexes are spells that are somehow difficult to incorporate to some builds as it is unique in a way that it would require both Faith and Intelligence in order to be used, as well as having high stat requirements. Hexes are a type of Magic that offer offensive and self-buff spells.
