Double damage!

Share Suffering Spell 1

Concentrate Manipulate Mental
Traditions Divine, Occult
targets two creatures Defense Will save
Range 30 feet Duration 1 minute

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You link the fates of two creatures together. Two creatures of your choice in range must attempt a saving throw.

Critical Success The creature is unaffected.
Success The target takes half damage from all damage sources dealt to the other target except from this spell. the damage is of the same type as the original damage.
Failure The target takes damage equal to all damage sources dealt to the other target except from this spell. the damage is of the same type as the original damage.
Critical Failure The target takes damage equal to double all damage sources dealt to the other target except from this spell. the damage is of the same type as the original damage.

Thoughts?