(Metamagic)
You blend shadow into your spells, increasing their efficacy at the price of susceptibility to light.
Benefit
When you cast a
Tenebrous Spell in
Darkness or dim light, the spell's effective caster level and any associated save DCs are increased by 1. Any attempts at dispelling a
Tenebrous Spell in
Darkness or dim light take a -2 penalty on the dispel check. Casting a
Tenebrous Spell in bright light is difficult, and requires a concentration check (DC 15 + twice the
Tenebrous Spell's effective spell level). Attempts to dispel a
Tenebrous Spell in bright light gain a +4 bonus on the dispel check. You cannot use this feat on spells with the light descriptor. A
Tenebrous Spell uses up a spell slot one level higher than the spell's actual level, except in the case of spells with the
Darkness or shadow descriptor or of the illusion (shadow) subschool; this feat does not change the effective level of those spells (but still counts as using a metamagic feat for all other purposes).
