Adding "Magic Attacks" on SP Absorbtion (or HP as well) Stone (Dual)

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Imported from legacy Flarum.
Original author: pablojob (Flarum #540)

Hello again.

Just checking if possible to add also “Magic Attacks” on this SP Absorbtion Stone (Dual) for some magic users like Doram, Hyper Novice, etc…

Thanks in advance.