Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Amumu at 3vs3
Amumu is one of my favorit champs on 3vs3 cause he is a tank killer with his w-skill, and his e-skill has a nice damage output at the early game against squishys. He has an incredible cc with his w and r and can kill the dragon really fast. You should go on the botlane with an ad offtank like xin or somone else who is great with a stunner on his lane. Your role is to stune and to deal magic dmg also you can turn a fight easilly with your ultimate. You can do also nice ganks on the top-lane. like that i have a 75% win raito at 3vs3 rankeds with my team.
Have much fun with my amumuguide!