uncommon evocation shadow sorcerer 

Bloodline shadow

Cast [>>] somatic, verbal

Area 10-foot emanation; Targets enemies in the area

Saving Throw Reflex; Duration sustained up to 1 minute

Your shadow wriggles before spreading out from you, forming a gateway of clinging, consuming shadow through which the horrors of another plane can barely be seen. The first time each turn you Sustain the Spell, the radius increases by 5 feet.

Each enemy that enters the area or begins its turn in the area takes 2d6 negative damage and must attempt a Reflex save.

Critical Success The creature is unaffected.Success The creature sinks partially into the shadow, taking half damage and a –5-foot circumstance penalty to its Speeds for as long it remains in the area.Failure As success, but the creature takes full damage and a –10-foot circumstance penalty.Critical Failure The creature is absorbed into the shadows, where it can be seen below the surface; it takes double damage and is immobilized for 1 round or until it Escapes.

Heightened (+1) The damage increases by 1d6.

Advanced Player’s Guide, page 235.