- For the item that drops during the Lady Vashj encounter, see
[Tainted Core].
- Tainted Core
- Binds when picked up
- Use: Teaches you how to summon a Tainted Waveling.

Tainted Core drops from Hydross the Unstable in Serpentshrine Cavern.
Pet Journal
"The spawn of Hydross, considered by the elemental community to be the "Earl of Puddles.""
Battles
Elemental: Ignores all negative weather effects. Enemy pets can still gain the beneficial effects from weather when facing an elemental.
+50% damage from
-33% damage from
Level 1 | Level 2 | Level 4 |
---|---|---|
![]() ![]() |
![]() ![]() |
![]() ![]() |
▲▼ | ▲▼ | ▲▼ |
![]() ![]() |
![]() ![]() |
![]() ![]() |
Level 10 | Level 15 | Level 20 |
Notes

The purified Waveling.
- From time to time the Tainted Waveling will purify itself, turning blue for one minute.
Patch changes
Patch 5.3.0 (2013-05-21): Added.