I just built a deck for Coliseum, but I dunno if it's good or not, hope yes, and is this one...
Frozn - Annuqa, Haaken, Mikaal, Rad, Sah Brinak, Stooge, Windzy and Yodd
But because is my first time I don't understand something, why there are some much life points and pillzs? so you should aim in play like in Elo and not to ko right? and when and how you know if you win something?
Huracan half are effective for KO too. People never expect many pillz on El Gascaro and Derby Queen is a 2* capable of 5 damage so allows lots of space for higher * cards to help KO. El Mercurio is capable of effectively 8 damage with Revenge. Be warned though, many of Huracans abilities are conditional so they can fail pretty spectacular if you're not careful
All Stars provide a solid half, I found Harrow Ld Saki Agustino Nathan pretty useful, especially Harrow Ld with his 7 damage. If you don't have Harrow Ld using Heartnett or Quinn could work too
Remember, since you extra pillz initially fury activation is less risky so helps with KOing too