Hello fellow Summoners! This is my very first guide and I hope you like it! So this guide is on Kog'Maw, the Mouth of the Void.

Pros:
[*] Long range, especially with Bio-Arcane Barrage and Living Artillery
[*] Can snipe with Living Artillery
[*] Passive can help out your team if they're in trouble
[*] Can farm very well
[*] Can take Baron early on, after BORK is built

Cons:
[*] Not tanky at all
[*] No escape
[*] Slow movement speed
[*] Long cooldown on slow
[*] Susceptible to ganks

For the runes I choose Attack Damage Marks, they give Kog'Maw a little boost in power to help take down your opponents. The Armor Seals help Kog'Maw take a little more damage without having to recall or use up all your health pots. The Magic Resist per Level Glyphs help with those pesky mages. The 2 Movement Speed Quints help with one of Kog'maw's flaws, movement speed. And the Attack Damage quint works in the same way as the marks.

With Kog'Maw's Skills, you don't have to level them this way, it's all preference. I take his Q (CAUSTIC SPITTLE) first just to harass lane opponents and last hit minions, and I max it first.
I take his W (BIO-ARCANE BARRAGE) to help with more harass and last hitting, I max this second. These two abilities can be interchanged, depending on your preference. I take his E (VOID OOZE) after his Q and W for a way to kite and try to escape, or to slow enemies enough to land a Q or R.(I max this last) I take his R (LIVING ARTILLERY) at levels 6,11, and 16 to max it as soon as possible. This ability works great with VOID OOZE, allowing you to snipe fleeing enemies. It can also be use to farm minions waves effectively.

I take Flash and Ignite as my Summoner Spells. Flash can be traded out for Ghost. And Ignite can be traded out for Barrier or Teleport.