Aethon (Base)

Magic Item Devourer. If the Aethon sees a magic item, it can devour it and gain its properties. Doing so takes 1 action for a common item, 1 minute for an uncommon item, 10 minutes for a rare item, 1 hour for a very rare or legendary item, or 1 day for an artifact. For example, if the Aethon finds a ring of three wishes, the Aethon can take 1 hour to devour it, and can then cast the wish spell three times. Each time the Aethon devours a legendary item or artifact, it grows one size and rerolls its hit dice, adding an additional die. This size goes up to huge, and for each time afterwards, the Aethon gains a hit die and improves one statistic by 2 or 2 statistics by 1, but must decrease its dexterity by 2. This can exceed 20, but not 30, and the Aethon's dexterity minimum is 3 (-4). This Aethon has not eaten any magic items.

Magic Resistance. The Aethon has advantage on saving throws to resist magical effects.

Magic Weapons. The Aethon's weapon attacks are magical.

Multiattack. The Aethon makes two tentacle attacks or hook attacks, then uses its beak.

Tentacle. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage. Instead of damaging the target, the Aethon can grapple (escape DC 16) the target. The Aethon has three tentacles that can grapple. 

Hook. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) piercing damage plus 11 (2d10) poison damage.

Beak. Melee Weapon Attack. +8 to hit, reach 5 ft., one target. Hit: 14 (2d10 + 3) piercing damage.