Corruption Seed

A large, levitating orb glowing a dark purple. It lets off tiny, purple particles that look almost like dust. It is created by dark spellcasters and imbued with 10 souls to grant it its dark powers. These souls are slowly consumed as it evolves, to grant it the power it needs. Additionally, at this stage of its evolution it is beginning to take the form of a small tree, with dark branches haphazardly dangling off its side.

The Corruption Seed's lair is wherever it is placed by it's master. 

Lair Actions

On initiative count 18 (losing initiative ties), the Corruption Seedling takes a lair action to cause one of the following effects; the Corruption Seedling can’t use the same effect two rounds in a row:

• The Corruption Seedling sends tiny particles into an enemy's nose. If the target fails a CONSTITUTION (DC of 13) saving throw, the target takes 1d10 necrotic damage and becomes frightened.
• The Corruption Seedling conjures magical tentacles beneath a target and forces them to make a DEXTERITY (DC of 10) saving throw; on a failed saving throw, the tentacles grapple them for one turn.
• The Corruption Seedling chooses a target. The target must make an INTELLIGENCE (DC of 11) saving throw, and on a fail that target will lose a spell slot of its lowest current level. (For example: If a wizard fails the saving throw and has zero 1st level spell slots, one 2nd level spell slot, and two 3rd level spell slots, the wizard will lose their 2nd level spell slot.)