Can you voluntarily fail to overcome Spell Resistance?


Rules Questions


For example, if you cast a Fireball and an ally with SR is within the blast radius, can you voluntarily fail the caster level check to overcome their Spell Resistance?


Not seeing an option where the caster can voluntarily fail to effect one target in an AoE spell and considering that if you could the Selective Spell metamagic feat would be pretty worthless…

I'd say probably not.


I, too, say nay.

You can voluntarily lower your SR, in order to be affected by a spell. You could even voluntarily fail a saving throw. But you cannot voluntarily fail your caster level check to beat Spell Resistance.

(Theoretically, however, I could see an argument that one could cast a spell at a lower caster level, thus lowering your chances of bypassing someone's Spell Resistance - however, at the expense of lower spell effects.)


Archmage_Atrus wrote:

I, too, say nay.

You can voluntarily lower your SR, in order to be affected by a spell. You could even voluntarily fail a saving throw. But you cannot voluntarily fail your caster level check to beat Spell Resistance.

(Theoretically, however, I could see an argument that one could cast a spell at a lower caster level, thus lowering your chances of bypassing someone's Spell Resistance - however, at the expense of lower spell effects.)

Well...on spell listings there is a listed under SR "Yes, harmless" suggesting there is a choice in resisting and some creatures with SR do cast defensive spells on themselves like mage armour, barkskin, bull's strength and so on.

I'd put it under DM ruling.

Grand Lodge

No...you made your choice when you cast the spell and the consequences are on your head. The caster check does not represent an actual caster action, just resolution of mechanics.

The Exchange Contributor, RPG Superstar 2008 Top 6

DM Aron Marczylo wrote:

Well...on spell listings there is a listed under SR "Yes, harmless" suggesting there is a choice in resisting and some creatures with SR do cast defensive spells on themselves like mage armour, barkskin, bull's strength and so on.

I'd put it under DM ruling.

Creatures casting spells on themselves is covered under the spell resistance rules. In a nutshell, your own spells always overcome your own spell resistance.

There's rules in place for lowering your resistance. For making it impossible to overcome? Not really. Allow a creature with a token amount of spell resistance to take unlimited amounts of friendly fire is just bad idea.


Russ Taylor wrote:
DM Aron Marczylo wrote:

Well...on spell listings there is a listed under SR "Yes, harmless" suggesting there is a choice in resisting and some creatures with SR do cast defensive spells on themselves like mage armour, barkskin, bull's strength and so on.

I'd put it under DM ruling.

Creatures casting spells on themselves is covered under the spell resistance rules. In a nutshell, your own spells always overcome your own spell resistance.

There's rules in place for lowering your resistance. For making it impossible to overcome? Not really. Allow a creature with a token amount of spell resistance to take unlimited amounts of friendly fire is just bad idea.

ahh I figured that would be the cast.

Still a new DM, but learning :)

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