Idea: Centennial Spell

[Angel Tarragon]

I've been contemplating a feat that increases the duration of a spell to 100 years, but can't put my finger on the Spell Level (slot) adjustment. I already know that non-permanent, non-instantaneous spells are out this window for this, so I am wondering if I shouild make it a variable based on the base duration of the spell (rounds, minutes, nhours, days). My best guess is that it is going to require at least a +9 adjustment, automatically makink it an epic spell slot.

Thoughts?

 

[Sound of Azure]

Sounds more like it should be a ritual (involving multiple casters), and incantation, or something like that.

So... it would either be a modification of a spell so it becomes a ritual, or it's a seperate ritual that you perform along with the spell you are changing the duration of. I think either of these would be a more feasible means of achieving such an effect.

If you want to keep it as a metamagic feat... I guess it could be an extension of the Extend/Persistent Spell feat chain, perhaps with a feat that makes the duration 1 year in between.

 

[Jack Simth]

For most campaigns, a 100 year duration is effectively permanent.

With the right restrictions, I'd actually let it slide at +4 (or even less!).

If it will only affect, say, non-mobile effect or area effect spells (to drop such things as Mage Armor, Shield, Veil, Greater Invisibility, and the like) with a duration greater than Instant (that just to avoid the headache of a Centennial Fireball), and increases the casting time by an hour (so it can't be used in combat), I'd let it slide. Then the BBEG would make heavy use of it.

Centennial Grease on the stairs, Centennial Fog Cloud by important ledges (goes well with Illusory Walls), Centenial Rope Trick guard towers, Centennial Wind Wall (just for effect) and so on.