From Dungeons of Dredmor Wiki

"Open one of your six mouths and sing the song that ends the Earth."

Base Cost: 12 - ( 0.25 )

Minimum Cost: 3

Effect:

• Damage: ( 1 + 0.43 )
• DOT: Zalgo1 for 1 turn

• Paralyze, 33% chance for 1 turn
• Bleed
• On turn 2: Corpse Blast ( 3 + 0.15 ) ( 3 + 0.15 )
• On turn 3: Nightmare ( 1 + 0.38 )

Area: 4 tile radius from the center (77 rough circle)

Duration: 7 turns

Tentacular Doom is a necromantic area effect attack that can be triggered by other spells such as Tenebrous Rift. It creates a large area in a rough circle 7 tiles across, in which anything moving into or through the area will take a significant amount of damage.

It is a side-effect of spells cast by characters with the Necronomiconomics skill tree, and part of the side effects of consuming a Root of T'Char or from a Bolt of Squid.

[edit] Trivia

• The spell's description is a reference to a Penny Arcade comic.