Dark Druid

You hurl a small seed imbued with decay. Make a ranged spell attack: on hit the target takes 1d6 necrotic damage and suffers vulnerable-to-necrotic for 1 round. Scales by character level (2d6 at 5th, 3d6 at 11th, 4d6 at 17th).

A spectral hand of rot reaches for a creature. The target must succeed on a Strength saving throw or be restrained as necrotic tendrils hold them; while restrained the tendrils deal 1d6 necrotic damage at the start of each of the target's turns. A restrained creature can make a Strength check at the end of each of its turns to break free.

You create a choking cloud of rot and spores. Creatures that start their turn in the cloud must make a Constitution save or take 2d6 necrotic damage and be poisoned until they leave the cloud and succeed on a save. Allies you designate treat the cloud as difficult terrain but are unaffected by the poison portion.

You cause a creature's flesh to briefly rot; on a failed Constitution save the target takes 3d8 necrotic damage and its Strength or Dexterity score (your choice) is reduced by 1d4 for 1 minute. On a success it takes half damage and no ability score reduction.

You bind a corpse's rot into a tether to a creature. Choose a corpse within range and a creature—if the creature is damaged while the tether stands it takes necrotic damage equal to half the damage dealt to the corpse. The tether breaks if the corpse is removed more than 30 feet from the creature or destroyed.

You call forth 1d4+1 skeletons or zombies of small/medium size that follow simple commands for 1 minute. They use weak stats appropriate to their type. If cast with a 4th-level slot or higher, the undead last 10 minutes and their attack damage increases.

You tear a partial aperture to another plane. As an action you may cause one creature you touch to be partially phased: it gains resistance to bludgeoning/piercing/slashing from nonmagical attacks and can move through creatures and objects as difficult terrain. Each turn while phased the creature must succeed on a Wisdom saving throw or experience brief madness (disadvantage on next attack).

A howl of boiled earth and decay erupts from you in a 60-foot cone. Each creature in the area must make a Constitution save. On a failure a creature takes 6d8 necrotic damage and is frightened for 1 minute. On a success it takes half and is not frightened. Undead and fiends have disadvantage on the save.

You graft necrotic vigor to a willing creature (or to yourself). The target gains temporary necrotic affinity: when it would be reduced to 0 HP for the first time while the graft exists, it instead drops to 1 HP and emits a pulse of necrotic energy (3d6 necrotic to nearby hostile creatures). This graft can be removed by remove curse or similar magic.

You cause a 20-foot-radius area to erupt with fast-growing necrotic flora that clings to creatures. Creatures entering or starting their turn there must make a Constitution save or be restrained and take 3d8 necrotic damage; on a success they are slowed (half movement) and take half damage.

You rip a temporary wound between planes beneath a creature or area: a 20-foot-radius rift opens at a point you can see within range, spewing brimstone, aberrant energies, or eldritch hunger depending on your Circle. Creatures in the area take 8d8 damage (necrotic or fire based on Circle) and must save Dexterity or be knocked prone. Allies can stand in the rift for a short time to gain a planar boon instead (DM adjudicates).

Available to the class at higher tier (see features). Unleashes a devastating wave of ruination or replenishment depending on you; handled as a class feature at 18th level.

You transfer life between creatures. Choose up to three creatures within range; you may cause one to lose up to 4d8 hit points (save Con for half) and distribute that amount as healing to the others equally. Undead in the area regain hit points instead when targeted.

You become one with rotty ground. You gain resistance to bludgeoning/piercing/slashing from nonmagical attacks and difficult terrain created by organic matter doesn't slow you. You may move through living plants without damage.

You conjure a small swarm of putrid insects that harass a foe. On a hit the swarm deals 1d6 necrotic and imposes disadvantage on perception checks relying on smell for 1 minute.