Alien mind. Devastator has advantage on wisdom saving throws.

blighted trail. whatever touches turns to a blighted white nonmagic plants are destroyed magic plants take 5d10 necrotic damage.

Mana Devour. if Breaker reduces a creature to 0 hp that creature turns to yellow dust.

Eternal starvation. if Breaker were to die it reforms 1d12 days later on blighted land the land is destroyed in the process it cannot reform on a separate plane.

(1/day): Blight

multiattack. Breaker makes 2 flurry of tentacles attacks and uses drag under if possebile

flurry of tentacles. Melee Weapon Attack: +10 to hit, reach 30 ft., one target. Hit: 3 (3d8 + 5) bludgeoning damage and target must make a constitution saving throw .(DC 16) or take 4d8 Necrotic Damage. 

drag under (reacharge 6). World Breaker uses its tentacles to drag 2 creatures underground and collapses the tunnel.