ok but its part of a set based around a theme, which should be more expensive to use than the cards in their pure elemental form.
It still should get lower cost. If you're making a card cost 24 quantum that's not a good sign in terms of design.
Currently :
Elemental Cost : Attack + HP Modifier + Ability Value + Bonuses
Unupgraded
Attack : 3
HP : + 1 (6-7)
Ability Value : + 4 (Lycanthropy+Momentum)
Bonus: None
Final Cost : 8
Upgraded
Attack : 8
HP : +3 (10+)
Ability Value : +5 (Lycanthropy for unupped was +3, however the more attack you add on a momentum creature the stronger it gets.)
Bonus: -2 for upgrade
Final Cost : 14 (Pushing it even at the elemental cost)1.5+1.5[Elemental] = [Other]
1.5 + 1.5 ( 8 ) = 13.5 ≈ 14
1.5 + 1.5 ( 14 ) = 22.5 ≈ 23
Even when I round up you need to lower the cost. I again suggest removing momentum and lycanthropy - because of them, your card is becoming overly expensive. Since momentum can be lobotomized by an active skill I'd suggest giving the Rhino a weaker variant of the skill like:
"Charger - Ignores 1 point of damage reduction from shields."
This keeps the ability but reduces it to make it playable. Please lower the cost as well.