The great devourer. As soon as something reaches it's stomach it is dissolved and absorbed giving the abilities of what was devoured

V.1 Hbilities earned:

undead: poison imunity

Androsphinx: dex and int save throws + multi attack

flame skull: reistance to piercing, profiency in arcana and peception

Action Name. Enter the description for your action.

Action Bite Attack. bite Attack: +8 to hit, reach 20 ft., 1/7 target. Hit: 1/7 (2d20 + 20) [Piercing/poison] damage. 

Action  Attack. Spit Attack: +5 to hit, range 5/120 ft., 1/7 target. Hit: 1 (3d10 + 10) [acid] damage.

Omnidiretinal sight: by using it's reaction it can dodge any ranged attack targeting it.

It has 3 legenday actions. an will use them as soon as one of it's heads is severaly damaged

Devorer vacuum: the monster opens its mouth and starts to suck everything within a 35ft radius. that within its radius must make a save trhow of constitution (CD16), if nothing happens, however, if it misses the target takes 1d10 of impact damage and is attracted at a melee distance from the monster

Scale shield: the creature eats a massive amount of scales where it should be hit and negates the damage from the hit (if the damage is cold the damage is reduced by half)

This action can be repeated up to 6 times

Cannibal regeneration: the monster start to eat one of it's heads an regains 2d20 of health