Spell penetration. How works?

[ilw]

Give me some examples, how works wizard's "spell penetration"?

What spells are using?
What creatures are affected?

[The Mages Corner]

Anyone tested to see if spells that are NO SR are really no SR? I'm making a build around conjuration spells so I hope I won't need spell Penetration. Thanks.

[AzureTheGamerKobold]

SR is like armor class for spells you have to beat the SR with your caster check and if i remember right it's 1d20+caster level so example

Creature has a SR of 21 and you are a level 11 caster, so your caster level is 11, roll 1d20+11 and need to get a 21, spell pene traition changes this by addition an addition 1-2 onto your roll.

[drh]

Ursprünglich geschrieben von AzureTheGamerKobold:

SR is like armor class for spells you have to beat the SR with your caster check and if i remember right it's 1d20+caster level so example

Creature has a SR of 21 and you are a level 11 caster, so your caster level is 11, roll 1d20+11 and need to get a 21, spell pene traition changes this by addition an addition 1-2 onto your roll.

You beat me to the likeness. SR (which is different from saves) is a sort-of AC versus magic. When you cast a spell on a creature with SR, you first roll a caster level check, and if it beats the SR of the creature, the spell takes its normal effects (which may involve a saving throw which the creature can still beat).