Lakescourge Lotus

Toxic Ichor. While submerged in water it's ichor taints water within 10 ft. of it. When a creature enters area for the 1st time on a turn or starts its turn there that creature must make DC 15 Con save or be poisoned while it remains in area and for 1 min after it leaves. A poisoned creature that is no longer in the water can re-save at end of each of its turns ending effect on itself on a success. If purify food and drink spell is cast on a space within 5 ft. of lotus or on space it occupies trait ceases to function for 1 min.

Undead Nature. Doesn't require air food drink or sleep.

Waterwalker. Can walk across surface of water as if it were solid ground. Otherwise works like water walk but isn't itself magical.

Multiattack. Two Tainted Claw or Poisonous Water Jet attacks.

Tainted Claw. Melee Weapon Attack: +6 to hit, 5 ft., one target, 6 (1d6+3) slashing damage + 9 (2d8) poison and target poisoned 1 min (DC 15 Con negates poison). A poisoned creature can re-save at end of each of its turns success ends effect on itself.

Poisonous Water Jet. Ranged Spell Attack: +5 to hit, 60 ft., one target, 15 (3d8+2) poison.

Enter Reflection. Touches a body of water large enough to hold it and becomes a reflection on water's surface. While in this form has immunity to B/P/S damage from nonmagical attacks and resistance to B/P/S from magical attacks. While a reflection speed is 5 ft. can't use Tainted Claw and can revert to its true form as a bonus action. If it takes damage that isn't bludgeoning piercing or slashing while a reflection forced back into its true form.