things you'll want (bit of a tl;dr because I'm trying not to miss anything):
at least one cursed set
consistent resets on trundas
good damage sets on trundas (6 pc merci + zeal with a bloodshield accessory is the current tops, but ignore defense 4 pc sets + zeal with bloodshield is good too)
9 piece protection is good on lydia
high stat Cruelty on one of your AoE champs, preferably A1
Crushing Rend on 6* Trunda, Heavencast otherwise
I wouldn't run a third Trunda, I'd look at bringing in a Lanakis to lower crit rate on the builds, or another reset champ like Kymar/Nia and likely get Nekmo out. He's probably eating too many turns.
The two trundas are in decent sets (one in savage, the other lethal and both 300+ crit damage/6.5k attack and both on 265 speed so that they get A2 turns at the same time)
Cruelty is on nekmo at present. And i have crushing rend on one trunda
I did toy with putting in nia and taking out nekmo, when i trialled it, it didnt feel as good, but nia was half built.
The reason i considered nekmo for the cursed set is simply that he has the a1 aoe.
Dont get me wrong, the team has done close to a billion points on its own before now (its easier to do so on normal), but with clash as it is i want the ability to put a couple of billion points on in the last hour or two- two help ninja a win