High One
Casting Cost 8

Starting Stats 5|4
Effect 1

: If targeted by Immortality then gain +5|+0 and momentum
Result: less powerful than the below creature
Casting Cost 8

Starting Stats 5|4 Momentum
Effect: 1

: Lycanthropy
^This is underpowered. (should cost 7

)
High One is underpowered but just slightly.
Enlightened One
Casting Cost 10

Starting Stats 6|4
Effect 1

: If targeted by Immortality then gain +9|+0 and momentum
Result: less powerful than the below creature
Casting Cost 10

Starting Stats 10|4 Momentum
Effect: 1

: Lycanthropy
^This is underpowered overpowered. (should cost 9

)
High One is underpowered but just slightly.
That said I feel that a toned down momentum immortal would be more appropriate (reduced cost as well)
Calculations of comparison creatures in spoiler.
Creature 1
Balanced Cost [7

] = Attack [5] + HP Value [0 ] -1 [Light Creature Bonus] +3 [Lycanthropy Skill] -1 [Duo cost] +1 [Momentum when attack<7]
Creature 2
Balanced Cost [9

] = Attack [10] + HP Value [0 ] -1 [Light Creature Bonus] +3 [Lycanthropy Skill] -1 [Duo cost] +0 [Momentum when attack>7] -2 [upgraded]