| Mod | Save | ||
|---|---|---|---|
| STR | 21 | +5 | +8 |
| DEX | 14 | +2 | +2 |
| CON | 19 | +4 | +4 |
| Mod | Save | ||
|---|---|---|---|
| INT | 19 | +4 | +7 |
| WIS | 11 | +0 | +0 |
| CHA | 15 | +2 | +2 |
Amphibious. The dragon can breathe air and water.
Unnatural Constitution. Whenever the dragon is dealt damage, it must make a DC 18 constitution saving throw. On a success, the dragon regains 12 (4d6) Hit Points and has resistance to the damage type that triggered the save until the end of turn. On a failure, the dragon takes 6 (2d6){"diceNotation":"2d6","rollType":"damage","rollAction":"Unnatural Constitution","rollDamageType":"Force"} force damage and cannot save for it's unnatural constitution again this turn. This damage cannot be prevented or reduced in any way. The dragon automatically saves if it has resistance to the damage type that triggered the save.
Multiattack. The dragon makes three Rend attacks.
Tentacle. Melee Attack Roll: +9, reach 15 ft. Hit: 12 (2d6 + 5) Bludgeoning damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 14) from one of two tentacles.
Consume Material Existence. Intelligence Saving Throw: DC 16, one creature within 30 feet that is Charmed or Grappled by the aboleth. Failure: 10 (3d6) Psychic damage, and the next time the dragon rolls for it's unnatural constitution, it can choose to succeed instead. Success: Half damage, and the dragon cannot choose to succeed on its next unnatural constitution saving throw.
Unnatural Breath (Recharge 5–6). Dexterity Saving Throw: DC 14, each creature in a 30-foot-long, 5-foot-wide Line. Failure: 35 (10d6) Acid damage. Success: Half damage.
Legendary Action Uses: 3. Immediately after another creature’s turn, the dragon can expend a use to take one of the following actions. The dragon regains all expended uses at the start of each of its turns.
Lash. The dragon makes one Tentacle attack.
Aberrant Drain. If the dragon has at least one creature Charmed or Grappled, it uses Consume Material Existence and regains 5 (1d10) Hit Points.