This elder eidolon is based on the kraken.
| Hit Dice: | 20d10+60 (170 hp) |
| Initiative: | +2 |
| Speed: | Swim 20 ft. (4 squares) |
| Armor Class: | 30 (−4 size, +2 Dex, +18 natural, +4 deflection), touch 12, flat-footed 28 |
| Base Attack/Grapple: | +15/+43 |
| Attack: | Tentacle +27 melee (2d8+16/19–20) |
| Full Attack: | 2 tentacles +27 melee (2d8+16/19–20) and 6 arms +22 melee (1d6+8) and bite +22 melee (4d6+8) |
| Space/Reach: | 20 ft./15 ft. (60 ft. with tentacle, 30 ft. with arm) |
| Special Attacks: | Constrict 2d8+24 (tentacle) or 1d6+24 (arm), improved grab, insanity aura (DC 20) |
| Special Qualities: | Construct traits, damage reduction 10/adamantine, darkvision 60 ft., fast repair 5, immunity to magic, low-light vision, otherworldly geometry |
| Saves: | Fort +6, Ref +8, Will +6 |
| Abilities: | Str 42, Dex 14, Con —, Int —, Wis 11, Cha 1 |
| Skills: | — |
| Feats: | Improved Critical (tentacle) |
| Environment: | Any |
| Organization: | None |
| Challenge Rating: | 15 |
| Treasure: | None |
| Alignment: | Always neutral |
| Advancement: | — ♊ |
| Level Adjustment: | — |
Source: Lords of Madness, page 146. Removed inexplicable “(9 squares)” text from Space/Reach entry. The base kraken has a Dex of 10 and the template adds +4, so this elder eidolon kraken has a Dex of 14 and not 11, granting cascading changes to AC, Reflex saves, and so forth.