Set 2 is full of broken interactions and balance issues
I would quickly jump into this, because today I kept losing because players kept abusing the same "strategies".
Mage's cap Really, just change it to give Ocean buff. There is literally 0 reason for this item other than it makes the Mage buff way too easy to pull off and makes certain compositions beyond broken. Really, who thought it would be a good idea to give the mage buff to summoners? Or to Neeko? Or to literally every spell reliant champion? You haven't seen a Lv3 Renekton with Mage buff. He can wipe the team himself. Mages also include two Ocean champions, so this item needs to be removed, because from my games it noticed that it is the source of huge variety of gameplay problems.
Perma Glacial stun The current glacial units work through applying on-hit effects as much as they can and two of them are Berserkers. There really should be some sort of delay between two applied stuns, because permastunning the entire team is just nonsense.
Azir gets almost 0 benefit from the Desert buff I consider Azir a strong summoner, but he is a summoner. Desert buff gives armor penetration. Azir is a summoner, so he deals magic damage mostly. Really just makes no sense.
Predator builds are overloaded The predator buff itself is extremely potent. There would be no problem with this, but Predator units include some really strong secondary attributes which the player can go for. This include Glacial, Steel, Poison and Crystal. Secondary units can also be Ranger, Assassin and Berserkers. Even the 25% execute is too much for such solid builds and I suggest to either decrease the execute or just change it to something else.
Summoners mess up the targetting system, also summons can win rounds Summoners brought wide variety of annoying gameplay issues. First of all, some summons can keep champions distracted long enough for the summoners to summon another round of creeps. This is especially true for Malzahar, who because of whatever reasons starts with half mana (really just why?). Champions should prioritize summoners over summons or just make summons die, when their summoner is dead. Either way, if all champions are gone, but summons are still present, then the player should lose the round.