Deaths Lotus

You Summon a large black lotus in an unoccupied space of your choosing within range that you can see. As part of the casting as on subsequent turns as a bonus action you can cause the lotus to drain the life of nearby creatures. Each creature within a 20ft radius centered on the rose must make a constitution saving throw or take 2d6 necrotic damage. When you stop concentrating on the spell the lotus explodes. Each creature within the radius must make a dexterity saving throw or take an amount of piercing damage equal to the amount of necrotic damage dealt (max 10d6) or half as much on a save.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for every slot level above 3rd This also increases the max damage that can be dealt when the lotus explodes.