"Werewolf" mount - possibly usable only as a werewolf. Transform into a werewolf, features of mounted status only, not actually werewolf transform or effects.

"Mist" mount - possibly only usable as a Vampire, particularly a stage 4. Turn into mist. Still retain a player hitbox and while highlighted by a player they see the white highlight on the player hitbox. Features like a mount. Mount stamina, dismount stun, etc. Like a perpetual mist form that can be dismount stunned and uses mount speed and stamina and cannot fight without dismounting. Because mount features. NOT invisible. Possibly hard to see, but healthbar is plainly visible, if the player has it active, and hitbox/highlight is retained.

• Mist form, but as a mount
• Mount speed, mount stamina
• can be targeted, health bar and highlight still show
• Body might be roughly invisible because is mist, but hitbox, health, and highlight still show, effectively Not invisible.
• NPCs treat you as Not invisible, as if mounted on a horse
• It's just cosmetic
• mounting and dismounting animations may be different, but same timers, and you still get stunned if dismounted by combat
• Detection same as mounted, because it is mount status. People can tell it's mount and not mist form because it's perpetual, not 1s-1/2s duration dash. That and you're fast as a mount.
• Any ability casts or combat attempts that would dismount you, dismount you and end the cosmetic effect.

These are based off the curses, but are functionally the same as a basic mount, just visually the curse.