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- Main article: Madness of Deathwing
The Elementium Terrors spawn in the second phase of the Deathwing encounter. Pieces of Deathwing's armor chip off, forming two Elementium Terrors nearby.
- Tetanus — The Elementium Terror's attacks cause Tetanus, (19500 to 20500 10N) (23400 to 24600 10H) (29250 to 30750 LFR and 25N) (35100 to 36900 25H) Shadow damage every 1 sec for 6 sec. (Stacks)
Patches and hotfixes
Patch 4.3.0 (2011-11-29): Added