I don’t think the combo package is really worth running in this deck.
All 3 of these cards can be game winning cards so I think the the deck will be pretty bad if you’re missing all 3 of these to be honest, I know there is some Sonya combo OTK decks so you could look to play those.
Or if you want a slower Rogue deck thats refreshing you could try to cook up a slower starship control Rogue deck list. I’ve got a couple in the making but they’re still not great

Incindius is not essential, you could replace him with a Dirty Rat or a the destroy enemy weapon Viper, other possibilities would be a Flik Skyshiv or Shadow Word: Steal. Up to personal preference and what you feel like you’re struggling with.
Could also put Kil’jaeden out of ETC (I’ve got to experiment with this)
Could probably replace the Tar Slick with a Scarab keychain, although tar slick + Health drink turns go crazy.
Or if you do Tar slick + tess (which replays all your health drinks).
Could possibly replace the Cover Artist with a Mind Control Tech.
Could replace Griftah with Speaker Stomper.

Overall I do think all the legendary cards this deck runs are very GOOOD and hard to replace with cards that are gonna be just as good.
What cards are you missing?

What exactly is win con with this deck?
How does one play this?

What exactly is the go-to big damage Il’gynoth combo?

Can you disenchant it?

Repalcement for second Shattered Rumbler?

This doesn’t seem very Galakrond Warlock like to me

Replacement for Swampqueen Hagatha and Omega Devastator?

There is no boom bot Dr. Boom
It’s only the hero Dr. Boom

Replacement for Cairne?
Currently using Mechanical Whelp

Replacement for Uther?

Replacement for Sonya?

Replacement for Myra?

Replacement for Deathstalker Rexxar?

Replacement for Black Knight?

Replacement for greenskin?

Assasinate over vilespine?

To get extra value cards.

Replacement for Captain Greenskin?

Replacement for Zola?