Are the following intended to be permanent?

Life drain seems like it would have its "flavor" or narrative uses occasionally.  However, if intended to be permanent, Absorb seems very powerful, possibly overpowered?  For example, losing Dark Vision or Great Cleave running into a 3rd level caster in some random encounter would be potentially devastating to that character long term.  Or am I misunderstanding?

Absorb (Affects 1 | Size Medium | Level 3)

Drain an ability of an opponent through touch on a successful Magic vs. will check

Life Drain (Affects 1 | Size Medium | Level 3)

Touch a victim to age them 5 years (or equivalent) and add years to the casters. Magic vs fortitude to succeed

Hey Greymark,

The Absorb spell (Dark Magic - I've noticed I've replicated the spell name for Matter magic and will need to edit/review this) is intended to be temporary for the encounter but appreciate I have not specified this.

The Life Drain was intended to be permanent but could be considered over-powered if someone 'spams' this so may need some balancing.

In general, I tend to run a 'low' magic setting so encountering mages is uncommon which mitigates some of these risks.

Again, thanks for the feedback I've marked up my play-copy with the feedback and will likely (at some point in the future) do a further review/sweep/edit of this minor errate.