Spontaneous Metamagic

[comrade raoul]

The idea is that you can substitute a metamagic spell for a higher-level prepared spell, but you lose both the higher-level slot and the lower-level spell you modified. You get flexibility at the cost of spells per day.

Spontaneous Metamagic
You can quickly apply a metamagic feat to a spell you've prepared, though not especially efficiently.
Prerequisites: At least one metamagic feat, ability to prepare and cast spells.
Benefit: You can apply a metamagic feat to a spell you've prepared as you cast the spell. When you do so, you must expend a prepared spell (of your choice) of the same level as the spell you're casting, modified by the appropriate metamagic feat. (In effect, you're substituting your modified spell for your higher-level prepared spell.) You still expend your prepared spell slot as normal. When you spontaneously apply a metamagic spell with this feat, the casting time is increased (a spell that takes a standard action to cast now takes a full-round action), just as though you were applying a metamagic feat as a spontaneous caster.

For example, a wizard can use this feat to spontaneously apply Empower Spell to a prepared magic missile. When she does so, she expends one of the 3rd-level spells she's prepared in addition to magic missile, and she casts her empowered magic missile as a full-round action.

Balanced? Interesting? Worthwhile?

[Teydyn]

No, too much. Wizards are very strong as is and even the option to spontaneously apply metamagic is too much IMHO

[Vrecknidj]

You're using up two spells to use one metamagicked spell? Doesn't sound too much to me. The wizard in question is burning up higher-level spells, and that's a significant drawback.

I think it's the opposite, a little too much of a drawback for the player. But, that's good, that makes the player cautious.

Dave