Concentration and Multiple Factors

[JLendon]

If you are casting defensively and also taking continuous damage from bleed or from a hit with a Magus’ Lingering Pain arcana, how do you calculate the concentration DC target? Is it 15 + (2 x spell level) + (.5 x continous damage)?

[Mabven the OP healer]

I believe you would need to make two separate concentration checks, calculated separately.

[Adoke]

Yep, and if either fail you flub the spell. Throw in a readied action to attack on spell cast and they'll have to make three seperate checks. Lock those casters down! =)

[Sekret_One]

Now do it in a storm.