(Metamagic)
Creatures damaged by your spells with the cold descriptor become entangled.
Benefit
The frost of your cold spell clings to the target, impeding it for a short time. A
Rime Spell causes creatures that takes cold damage from the spell to become
Entangled for a number of rounds equal to the original level of the spell. This feat only affects spells with the cold descriptor. A
Rime Spell uses up a spell slot one level higher than the spell's actual level.
