Most of the current combo base information is listed in this thread made by Berenos! I used some information from this thread when making this suggestion

Lil Backstory; I love breeding for combo bases, and while I do enjoy seeing the many fails you can get when doing so, ending up with a bunch of chestnuts, titaniums, slates, and other fails when breeding for Elysian gets old.. It got me thinking and I may have come up with an idea to make combo breeding more rewarding and worthwhile.

What if.. when you breed a combo base.. say Elysian, with itself or one of its factors, you have a chance of getting ANY of its factors as a possible fail roll. It couldn't be exploited via mass breeding with NCLs. It would only work if you bred the combo with itself or one of its factors. I think that it would be nice to have a chance to not have your work go completely to waste with an all-dud litter.

This wouldn't damage the market since as it would naturally be a small chance and most applicator/rare/uncommon bases don't sell for much in the trade center. Recently with how bad the market has been for any special bases that aren't currently "sought after". Overpopulation wouldn't be a problem either, as most combo bases aren't special/rare, and breed-only bases such as lilac wouldn't be applicable in the situation. More is explained below~


The odds would look a little like this-

( "parent base" x "parent base" = "cub base options" )

Elysian x Elysian = Fails, Elysian, Ice/Divine/Ebony


In the event that a factor is bred to the combo base, the factor used would roll before the other factors! If it's a combo x combo pairing, any eligible factors would be rolled at random.

Nadir x Ardor = Fails, Nadir, Ardor, Rhodonite/Ebony (Black rose and Hellebore excluded as they're combo/breed-only bases themselves)
------------------------

- To avoid overpopulation and market crashing, ANY raffle(aka special breed-only) bases would be excluded unless included in the initial breed. Reason being they are BREED-ONLY, meaning to pass, at least one parent has to have the base. So only Rares, Uncommons, Commons, and Applicator special bases would pop up if not used.
- If implemented, it would not come into play when breeding two factors together. This could be heavily exploited in game and that is the last thing we want so you can ONLY get other factors when breeding the actual combo to one or itself.
--------------------------

A few more examples to clarify~

Rough summary without the filler

- Combo x Combo/Factor breeding within their required times (if applicable) will produce ANY of their factors that.
- This will ONLY work with Combo x Combo/Factor pairings. Factor x Factor pairings will only produce fails, themselves or the combo.
- Where applicable, other combo bases used as factors would also be excluded from the rolling as they are breed-only and combos themselves.
- Due to requiring at least 1 parent to to have the base, Raffle/Breed-only special bases would only be included in the rolling if they were used in the initial breed. They can NOT pop up in a breed they were not involved in. (See spoiler for examples)
- Special x Special/Rare/Uncommon/Common passrates still apply. So you'd have a higher chance to get the special fails if you breed Special x Special

For Seasonal/Restricted Bases:
- If Combo x Factor are bred OUT OF SEASON, only fails and the factor used may pass.
- When bred IN SEASON, breeding combo x combo/factor acts like any other.
Uncertain, looking for opinions- If bred OUT OF SEASON, Combo x Combo may have a chance to pass fails, combo, and factors.
- This applies to ALL seasonal, weather, or time-of-day bases.

Lemme know what ya think ^^