Any class that doesn’t rely on mana/their abilities too much and don’t need defense.
I would say, Archer/huntress, rogue, and warrior.
Crown gives hp, dex, and att, i think the most offensive stats on a ring with quite bit of hp. Its perfect for classes that can get away without needing extra def on the ring.
I feel like its perfect for Rogues. They go invisible and you don’t need def, the hp is enough for rogue to tank a bit out of invis. After that rogue just needs dps which crown also provides. Cloaks have a long cd so mana is usually not a problem with some mana regen.
Archers/huntresses have good range so if you can dodge just the hp is enough. They are not heavily reliant on the abilities either, especially if u have a high mp heal pet.
Warrior is just high dps in general, more just helps you kill faster
not to mention warriors use heavy armor so they are fine off sacrificing some def and like rogues, their ability has a cd so mana is not a problem with some mana regen