The Omniforce (5e Creature)
From D&D Wiki
Tiny swarm of Gargantuan aberrations, neutral
Saving Throws all
Bestow Perfection. The Omniforce can use a bonus action to give any creature within 1,000 ft of it a stat relocation. It chooses any number of its stats, and sets each one chosen at a number of 1-30.
Glimpse of Perfectionist n. Melee Magic Attack: +X to hit, reach 5 ft., one target. Hit: X (1dX + X) damtype damage.
The can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The regains spent legendary actions at the start of its turn.
The Omniforce is an unknown force that creates the “Perfect Blooded.” They are given great mental or physical might, but it also bestows curses that can cripple a man, or either entire kingdoms.