Slam

Melee Weapon Attack: +5 to hit, 5 ft., one target, 10 (2d6+3) bludgeoning damage and it attaches to target. While attached doppelixir doesn't attack. Instead at start of each of doppelixir's turns target loses 10 (2d6+3) hp to blood loss. Doppelixir can detach itself via 5 ft. of move. It does so after it drains 20 hp of blood from target or target dies. A creature including target can use its action to detach doppelixir via DC 13 Str check.

Telepathic Urge

It mentally urges one creature it can see within 60' of it to attempt to drink it. Target: DC 11 Wis save or charmed 1 min. While charmed target must move on its turn toward doppelixir by safest available route trying to get within 5 ft. of doppelixir to drink it. Creature can re-save at end of each of its turns success ends effect on itself. If doppelixir attacks target effect also ends. If target attempts to drink it doppelixir can use a reaction to make one Slam with advantage vs. target. If target's save succeeds or effect ends for it creature immune to doppelixir's Telepathic Urge for next 24 hrs.