Siphon Shield

[Thaumaturgy] [Death]
Level: [Arcane 3]
Components: [S] and [V]
Casting Time: 1 Standard action
Range: Touch
Effect: Creature Touched and self
Duration: 1 round per 2 CL (Concentration)
Saving Throw: Fortitude half
Spell Resistance: No

As you reach out to touch your foe's chest, your hand glows dimly, enveloped in dusky grey flames. Upon breaking contact with your victim, a radiant barrier formed from its essence surrounds you. Subject must pass a fortitude save or take (CL x2) + PMA negative damage immediately (Half if saved). The barrier will form around the caster and grant equivalent warding to the HP lost. The barrier will collapse once that amount of damage is dealt but will regenerate at the beginning of the next round. When the barrier regenerates it deals the initial damage to the target once again.

VTT Macro Description:
@{character_name} makes a touch attack for [[1d20+@{MagicTouchAttack}+(0?{Do you have any miscellaneous bonuses?|0})]] on hit, they create a ward out of their target's life-energy. The subject will take [[(@{cl}*2)+@{PMA}]] negative damage, half on save. The caster gains regenerating warding equal to the damage done. Every round the ward will regenerate back up to the initial damage dealt, also dealing that same amount back to the subject.