You can use essence to enhance your spells.
Prerequisites: Con 13 or veilweaver level 1, ability to cast 1st-level spells, any metamagic feat.
Benefit: When you take this feat, choose one metamagic feat you know. Once per day, you can invest essence into this feat and choose one or more spells that you know (and have prepared, if you prepare spells) to apply the effects of the selected feat to. Using this ability adds one hour to the normal time required for spell preparation (for spontaneous casters this requires an hour of meditation). You must invest a number of points of essence equal to the normal spell level adjustment required by the metamagic feat (minimum 1 point of essence) for each spell to be affected. The next time you cast that spell, the spell gains the effect of that feat without any change to its level (or casting time, if you cast spells spontaneously). You can apply the effect of this feat to as many spells as you can afford to invest with essence. For example, you could invest 4 points of essence to quicken one spell (as Quicken Spell), or 12 points of essence to quicken 3 spells, as long as you had at least 12 points of essence to invest, an essence capacity of at least 4, and knew the Quicken Spell feat. Once essence is invested in a spell, it remains invested until the spell is cast, at which point the essence returns to your essence pool.
You gain 1 point of essence