concentration, 1 minute/mana
As an action, you anchor the shadow of a creature that you can touch or see within 10 meters to its current location. The creature must make a Reflex saving throw.
On a failure, it moves at half speed and takes 2d4 slashing damage for every meter it travels as it tears itself free of its shadow.
On a success, the creature is freed.
When you cast the spell—and once on on each of your turns thereafter as an action—you can cause the shadow to pull an anchored creature, tearing its flesh. The creature must make a Reflex saving throw.
On a failure, it takes 1d6 slashing damage and if it is Medium or smaller it is pulled up to 2 meters toward the shadow.
On a success, it takes half as much damage.
You can increase the damage from moving by 1d4, the damage from being pulled by 4d6, and affect a creature of a larger size for each additional mana expended.
You can target one additional creature for each additional mana expended. The creatures must be within 5 meters of each other when you target them.