What is the concentration DC for a spell caster to make if they are hit and damaged by a Tangle Bolt (APG)?
Multiple Choice:
A) DC 15 + Spell Level (Entangled Condition)
B) DC 10 + Spell Level + Damage Taken (concentration p. 206)
C) the higher of A and B
D) DC 15 + Spell Level + Damage Taken (both A & B)
Does it matter if the damage is taken while the spell caster is in the middle of casting or if the caster is trying to cast after being hit?
-Swiftbrook
It's A, unless the crossbowman had readied an action to fire a bolt at the caster when it started casting.
B is only used for readied actions or attacks of opportunity triggered by casting non-defensively.
If the crossbowman had readied an action to fire a Tangling Bolt at the caster, I would simplify things at my table and use D, though RAW probably has it that the caster would make two checks, both A and B.