Invasion Game Mode (Normal Mode) - Thoughts, Tips & Tricks

First of all, I just want to say that I think this game mode is one of the more interesting and 'enjoyable' game modes Riot has published in a while.

The premise is pretty simple, choose your team of star guardians and fight off hordes of enemies until you reach the boss stage. There are generally two types of scenarios, one is a king of the hill where you stand your ground and annihilate all the coming voidlings and the other is an Overwatch-esque escort mission where you follow the bubble until you reach the checkpoint while fending off monsters from each side.

Team Loadout: From my few games of the mode, typically you'd want a team that blends good amount of control (cc) and consistent damage (dps) alongside healers that can keep not only your team topped up but also provide cc to prevent some of the monsters from wreaking havoc across your team. What I found was a team consisting of two high damage adcs (jinx + mf), two supports (soraka + lulu) and a strong control mage (lux) made fending off these hordes much easier. The idea is that in this team oriented mode, the adcs will be doing most of the damage whilst the two supports not only keep the rest of the team alive but also keep each other from falling (supports are very squishy so having another one to cover the other's back helps tremendously) and finally the control mage keeps the hard hitting guys in check (kogmaw, velkoz) whilst the adcs come to help clean up.

Rounds: There are seven rounds in total I believe(?) and I've found that the 2nd last stage (the one before the boss) which swarms you with velkoz's is the hardest. What my team did to win was split into two groups to take care of the first stage velkoz's by going around the map opposite to each other and clearing the velkoz's 1 by 1. Once that part is done, the game will attempt to spawn a lot of these velkoz's in the middle. Make sure that MF has her ult ready for this and potentially lux, and line up cc in the middle of the spawn and once they get released you annihilate them all in one sweep (this will save a lot of time and frustration). Next either re-split into two teams or go together and make sure everyone is using their cc to effectively keep these velkoz's from shooting all over the place. For every velkoz down, that's 1 less fireball to worry about.

Boss Stage: For the final stage with the boss, stick together for the most part and important STAND BEHIND THE PILLARS AND LEAD THE BOSS AROUND. By doing this you can mitigate a lot of the damage he does with his 360 fireball move. When he spawns velkoz, take them out quickly and then refocus on the boss. The rest is up to you guys.

Miscellaneous:

1. Kill order Kogmaw >= Velkoz > Cho Gath = Skarner > Reksai > Khazix > Voidlings
2. Good items to get: Redemption (Lulu), Ardent Censer + Spirit Visage/Warmogs (Soraka), IE + Shiv/RFC (MF & Jinx), Luden's (Lux/Syndra)
3. Soraka's silence + Lulu's transformation really fxcks up the velkoz's.

tl;dr - 1. Team loadout: Mf, Jinx, Soraka, Lulu/Janna, Lux/Syndra, 2. 6th Stage - Focus velkoz, stick together or split even cc and damage teams, 3. Boss Stage - Focus boss until he spawns lots of annoying velkoz's then focus velkoz and then refocus boss, also stand behind pillars.