Variations on supernatural creature might stripping spells

I couldn’t find a room based Demon’s Eternal Oblivion (Ars Magica, p.160, Perdo Vim) so here are variants mixing supernatural realms, and demonstrating scaling up for Perdo Vim spells for rooms and big structures.

Strike Against the Undesirable Faerie

Perdo Vim General, R: Touch, D: Momentary, T: Individual

Reduces the Faerie Might of the creature touched by (Level of this spell +5), as long as the spell penetrates each creatures magical resistance.

(Base Gen, +1 Touch)

This effect could (arguably) be learnt at PeVi1 and still inflict +6 Might damage. This also shows that there are ways to help penetrate against powerful supernatural creatures when each dice roll counts; and could also be invested in a device to gain additional penetration – particularly a weapon with an “on-strike” trigger.

Excise the Unwelcome Magical Guests

Perdo Vim General, R: Touch, D: Momentary, T: Room

Reduces the Magical Might of all suitable creatures inside the affected chamber by (Level of this spell -5), as long as the spell penetrates each creatures magical resistance.

(Base Gen, +1 Touch, +2 Room)

Scaling means that this spell taken at PeVi5 has no effect, however at level 10 the spell will still inflict 5 points of night and may also identify creatures affected by they spell as they react. It’s a spell that probably is only spont cast by powerful wizards.

Excise the Unwholesome Demonic Interlopers

Perdo Vim General, R: Touch, D: Momentary, T: Structure

Reduces the Infernal Might of all suitable creatures inside the affected structure by (Level of this spell -10), as long as the spell penetrates each creatures magical resistance.

(Base Gen, +1 Touch, +3 Structure)

Advertisements

Reduced Might Stripping, a House Rule for Ars Magica supernatural opponents

Aside

A great house rule to limit the impact of might stripping spell effects on supernatural creatures in Ars Magica – Multiple applications of Perdo Vim do not stack, specifically for reducing a creatures Might or affecting an Arcane Connection. Once damaged only a more powerful spell will inflict more damage. Makes the famailiars tougher too.

Found via a discord group I’ve been chatting to. Clever idea!

Resilient Might – a Personal power for supernatural creatures

The spell Demon’s Eternal Oblivion (DEO) in Ars Magica and the other variations for draining Might from supernatural creatures has an interaction with MR and spell levels which encourages taking the spell at low level and repeat casting. This means that a low Might opponent in Ars Magica can be dispatched easily by a low level spell cast with high penetration, which in turn somewhat trivializes lower Might creatures as opponents. It is not ideal to boost the creatures might just so it becomes more of a threat.

To nudge this balance, the Resilient Might personal power is suggested. It allows tailoring of how tough a Might creature is against those effects without just adding more Might.

Resilient Might (Personal Power)

Rego Vim, 0 Points, R: Personal, D: Sun, T: Individual

The creature is more resilient to Might draining powers and spells, and reduces the effective Might drained by such spells by (level of this spell -15).

(Base, +2 Sun, Constant)