So we've been doing a LOT of Ex challenges on the Smogon discord, and this strategy was pointed out about fighting Skyla. Nice thing about it is that only 2 Lycanrocs are actually needed, as the host needs to use a maxed out Serperior. So basically, this challenge can be done with 1, totally free to play player whose really unlucky with rolls!
https://pokemonmasters.gamepress.gg/story-battle-guide/battle-guide-ex-challenge-skyla-very-hard
Reason I bring this up, is because Lycanroc is a fucking MONSTER with tihs gear. After we got it a ton of gear, me,
vzxt , and FenrirTheWolf witnesses Lycanroc's true cheesing power, and were bsaically able to destroy Rosa Ex on very hard with well placed Stone Edge spam! It's really quite something, Lycanroc is probably the best raiding mon in the game for sure!
Even if you don't have Lycanroc though, I'd say using this tactic with friends is worth it. The timing is pretty weird for the Serperior player at first, but once its nailed down, this tactic is very consistent. Pokemon whose typing don't match the gear get half the boots, which with 2 star gear, will acutally be just as much as a type alligned 2 star gear when maxed!
To be clear, for random farming, Brock Ex on very hard is probably the best just because the strategy is really obvious (use Treecko, boost up, spam leaf storm), but Brock is best done with stuff you need to roll for like Treecko, Nosepass, and Feraligatr (or Clawtizer as the budget option). Nice thing about Skyla is is that at very least, one person can be a totally 100% free player!
(Also, if any of you want to add me, my code is 7374-9940-1819-5337. I'm more than willing to co-op with yall!)