Black Rose and Thorns of Vengence.

Black Rose:

The Black Rose of Death follows us all, and a small portion of its power lives now in the Skeletal Wizard. When dealing Necrotic damage to a creature, you can plant the seed of the Black Rose within the creature. If you deal Necrotic damage to multiple creatures, choose only one to plant the seed into. When planting the seed, choose the duration of the Bloom: Either 1, 3 or 5 rounds. After the chosen number of rounds has elapsed, the Black Rose blooms. All creatures within 20ft of the creature the rose bloomed from must make a Constitution Saving Throw equal to Theorns Spell Save DC, or take 4D12 Necrotic Damage per round elapsed, taking half as much on a successful save. The creature the seed was planted in has disadvantage on this saving throw. A creature that is reduced to zero hit points through this damage dies instantly, and cannot be revived by any spell lower than 5th level.

If Theorn is Incapacitated, the Rose seed blooms, dealing damage equal to the number of rounds elapsed. This feature can be used once per long rest.

Thorns of Vengeance:

The Blessings of the Nature Godess flows freely now through the young Cervan. Thorns of Vengeance has 3 charges. When hitting a creature with a Melee Weapon, Cyril make expend a charge to call forth natures wrath. The creature, and any creatures within 10ft of that creature of Cyrils choice must make a Strength Saving throw equal to 10 + Cyril's Strength Modifier + His Proficency Bonus. On a failure, the creatures take 3D12 Piercing damage and are Restrained until the end of Cyrils next turn, taking half as much damage on a success.

A creature that dies while restrained by the vines are used as fertilizer, as the vines bloom beautiful healing flowers, beginning the cycle of death and rebirth. All creatures of Cyrils choosing within 15ft of the creature restore 3d8 + 5 hitpoints.

Thorns of Vengence regains all charges at the end of a long rest.