There are 3 basic strategies to the game. Sleep, poison, and stun. Different events have different strategies that are most effective for that specific event. Sleep can gain you complete control of the battle which is why its most ideal for events with monsters of outrageous buffs but it is also hardest to set up. Stun allows you temporary control of the battle making it ideal for events with moderate buffs but can sometimes be difficult to set up. Finally poison gives you no control of the battle and offers a fixed amount of damage but is extremely easy to set up making it not such a great option against buffed monsters but is possibly the best option for PvP. What is unique to the island challenge is that you are facing fewer monsters in opposing teams. With that in mind it’s less important to set up your sweepers with kills in order to continue killing and its more important to focus on the initial kills. Of the 3 aforementioned strategies poison is least effective and stun is most. Once you get a bit higher and the buffs get stronger youll see that the poison damage wont do much.
Drafting is very important obviously. With your first draft, the epic you choose should be more for support for later on then to be a sweeper. Like give turners and protector are really good for supporting your super epic and legendary sweepers to come. You wont need too many sweepers in your team. Just a few are necessary and the rest of your team can set them up for a few killls each and before you know it you went through the whole enemy team. So here will be a list of monsters that are the best drafting options for your team. If you use this list as a reference while drafting your team dont just draft the highest rated monsters every time. You obviously have to use common sense to know what to draft that will fit your specific team. For example if timestrikers are rated high dont draft them if you have no stun bombers. And if give turners are rated high dont make your team only give turners. This can be a guide to help those that dont have much experience with the island challenge.
Epics:
S: stun bomb/stun immunity, 400sec mega bomb, give turn/stun immunity, last stand, protect teammates/stun absorber, stun bomb/sleep bomb
A: Throw/bloodcrave, create duplucate/stun revenge, give turn/dreamhunt, timestrikers, give turn/heal all
B: auto protect, risky heal/survivor, one on one
C: twin killers, create duplicate/desperate bite, poison eater, sacrifice summon
D: poison massacre
Super epics:
S: team turn, protect teammate/stun absorber, blitzdragon, galvbane, searguard, lavamane, 400sec megabomb, twin death sentence
A: unwanted friends, frostrider, shinobidragon, robinator, desperate doubles, devilborg, diredemon, throw/bloodcrave, steamhawk, twin killers, virrabit
B: stunning entrance/heal all, cryptblade, rexkong, viridizidon, bonetalon, stun flash, gearcroc, torrentide, bullbrazen, cyrogolem, nighthunter, lunalord
C: gaiawolf, horrorclaw, ogremaster, rattlewyrm, protect focus, caniswyrm, snowhulk
D: hiberzor, sunlord, poison massacre, assisted moves, wolfrozen
3 stars and below:
S: stun bursters, knockback
A: sleep all/dreamhunt, one on one, sacrifice summon, timestrikers, protect teammates/stun absorber, puffoxin/rhynobrute, risky heal, heal all, grizzrex
B: stunning entrance, sleep all/sleep bomb, sacrifice heal
C: most others
D: poison
I hope this helps. Feel free to share your input. List can be changed


