Ok. First off, I've finally gotten around to trying out several of your classes/races and they are consistently well done and interesting.  Great work Recaiden. 
When I saw Doomlings in the Addons I had to laugh. PTSD'd Halflings! What a hoot. I've just gotten a CoE Doomling to Reknor on Insane. 
Velma's clvl 35 atm and rolling strong. 
She had a real trial by fire early in the run that exemplified the strengths of this combination. My regular route through the T1's is 'whereever I start' and then Trollmire and then Scint. Cav. Therefore, I often start to see troublesome Uniq's and Rand Bosses in SC. On SC-4, I got my 3rd escort, a Seer, three of them in a row. I took +5 MAG with each one. Or at least I intended to. The trip from the starting stairs to the portal, Looked like it was going to be a short walk, but instead it was a fractal nightmare that ran around the entire map. At the very bottom of the map, playing very carefully, Velma stepped into the view of a Uniq. An 800hp Minotaur Arcane Blade/Summoner. She was not even clvl-10. I almost abandoned the escort, preferring to not lose a life, at this point, but after thinking about it I decided to give the Curse of the LIttle People a chance to shine. 
It was a long (by T1 standards) fight, but it worked out. Dropped it just as I was losing all hope. Level'd up from it. Still a long way from the portal though. After crossing this big hurdle, I was being even MORE careful. As we were got close to the exit portal, Velma stepped past a side corridor and guess who was sitting there?
Gunsnake.
That was really a bad moment. 19 flat dmg resist. DW is going to do NOTHING to that. Because I was careful I was able to step out of LOS, but the escorts are idiots and I had limited options. It was going to walk right into if allowed. So. Velma blocked the little Seer and started spamming DW into the void, hoping for, I don't know what, but hoping anyway.
Eventually GS comes out. First shot, that Gunslinger stunner, put 13! talents on 1 turn CD. Everything except for CotLP, which I applied. The fight of the century (for me) took place. Velma won, but it was a masterpiece and it would not have worked, but for CotLP. That is a wonderful racial and augments the CoE perfectly without being OP in the least.
She's racked up 2x deaths, but they were unforced errors on my part in the Anteroom of Agony. Nothing has really put her in significant trouble since. The key, I believe is the combination of the Worm Robe, Adept prodigy and Device Mastery at 3pts. The only thing the CoE lacks is mobility and w/ that combination Velma can instant jump twice to R9!
However, there is a problem.
[LOG]	Abyssal horror is haunted by the void!
[LOG]	Abyssal horror is wasting away.
checkHit	67	vs	0	=> chance to hit	95
checkHit	67	vs	0	=> chance to hit	95
[SHADER] setting reset param	tick_start	6335277
[SHADER] setting reset param	tick_start	6335277
[target_simple AI]	183018	armoured skeleton warrior	selecting NEW TARGET	28	30	170871	abyssal horror
[Actor:move]	183018	armoured skeleton warrior	move from	25	30	to	25	30
[LOG]	Dark Whispers from Velma hits Abyssal horror for #GREY#39 darkness#LAST# damage.
[use_tactical AI] === Action Selected:	170871	abyssal horror	disable	 talent:T_ABYSSAL_SHROUD
[LOG]	Abyssal horror casts #{bold}##PURPLE#Abyssal Shroud.#{normal}##LAST#
[LOG]	#{bold}##LIGHT_STEEL_BLUE#Velma loses 10 health to the entropy.#{normal}##LAST##
[LOG]	#00ff00##UID

0#Talent Dark Whispers is ready to use.
[LOG]	#00ff00##UID

0#Talent Essence Reave is ready to use.
[target_simple AI]	183037	armoured skeleton warrior	selecting NEW TARGET	28	30	170871	abyssal horror
[Actor:move]	183037	armoured skeleton warrior	move from	24	30	to	24	30
checkHit	39	vs	40	=> chance to hit	48
[LOG]	#ORANGE#Velma shrugs off the effect 'Abyssal Shroud'!
FROM 	/mod/addons/cults/superload/engine/dialogs/ShowErrorStack.lua	loading previous!
ERROR:
Game version: tome-1.7.2
Addons: race-doomling-1.7.0[X], neka_qol07-1.0.0[X!], easy_map_v2-1.6.0[X!], ashes-urhrok-1.7.0[O], meteor-fix-1.7.2[X], orcs-1.7.0[O], zomnibus-1.7.0[X], items-vault-1.7.0[O], tuned-sounds-v1-1.6.7[X!], sms-ui-1.6.0[X!], kobold-1.2.3[X!], possessors-1.7.0[O], opaque-tooltips-1.5.5[X!], myth-minimalist-ui-1.5.10[X!], better_item_desc-1.7.2[X], rod_dissip-1.7.0[X], cults-1.7.0[O]
Game version (character creation): tome-1.7.2
Lua Error: /mod/addons/race-doomling/superload/mod/class/Actor.lua:8: attempt to call method 'hasEffect' (a nil value)
  At [C]:-1 hasEffect
  At /mod/addons/race-doomling/superload/mod/class/Actor.lua:8 canSeeNoCache
  At /mod/class/Actor.lua:7424 canSee
  At /mod/class/Game.lua:1636 logVisible
  At /mod/class/Game.lua:1760 delayedLogDamage
  At /data/damage_types.lua:442 defaultProjector
  At /data/damage_types.lua:922 projector
  At /data/damage_types.lua:3396 projector
  At /engine/Map.lua:1271 processEffects
  At /mod/class/Game.lua:1783 onTurn
  At /engine/GameEnergyBased.lua:90 tick
  At /engine/GameTurnBased.lua:51 tick
  At /mod/class/Game.lua:1559 
This is a piece of the error log. This error happens when I use the T4 racial. It happens when clones use it too. I am zipping and including several relevant error logs.
I do have a few addons active, but I'm fairly certain this is coming from your code.
Hope this helps.