Spell: Shattering Gem

A large gem floats around the target in an erratic pattern. The gem has 5 Hit Points. Each time a creature Strikes the target, the target attempts a DC 11 Flat. On a success, the gem blocks the attack, so the attack first damages the gem and then applies any remaining damage to the target. If the gem is reduced to 0 Hit Points, it shatters, immediately dealing 1d8 slashing damage (basic Reflex save) to the creature that destroyed it, as long as that creature is within 10 feet of the target.

Heightened (+1) The gem has 5 additional Hit Points, and the damage dealt by its detonation increases by 1d8.