Converting Planescape monsters

[Cleon]

Feats Cleave, Empower Spell, Extend Spell, Great Fortitude, Improved Toughness (+1 hp/HD), Maximize Spell, Multiattack, Power Attack, Quicken Spell-Like Ability (wall of force)

So the 3.5 version of the Tertian has Improved Toughness. That plus its construct bonus HP accounts for its somewhat decent hit points.

Hmm, according to the D&D Wiki Improved Toughness is covered by the Open Game License 1.0a so we'd be allowed to use it with our Decaton.

So I'm thinking Hit Dice 15d10+35 (117 hp) with Improved Toughness for our CC decaton.

EDIT: my Post #1859 and Post #1860 responses to Freyar's last posting might be on the previous page.

 

[Cleon]

I'm starting to wonder about dropping the living construct trait for the brainswapped modrons. It'd just add a lot of changes to the base creature like a Constitution score and being subject to energy drain that we don't have explicit support for from the original adventure.

In The Great Modron March the brainswapped Decaton, Valran Stonefist, has exactly the same statblock as a regular Decaton apart from "Though decatons normally cast spells as 10th-level clerics, Valran doesn’t receive spells from Primus."

Unfortunately, the hierarch modron statblock in TGMM is very minimalist and doesn't include abilities common to all hierarch modrons, so it's unclear if Valran possesses a hierarch modron's "never surprised" and "never roll initiative, and may choose when to act in any round" or the immunities, resistances and SLAs every hierarch possesses.

Considering all hierarch modrons have at-will wall of force that'd be nice to know!

I'm starting to think Brain-Swapped Modronoids should just have the Construct trait like the Half-Golems from the Monster Manual II and its Web Enhancement.