It is simple guide. I don't speake/write English very well but I want give you any ideas.

I'm so sorry for mistakes.

Buy boots and potions in base and run (with Q) to the BOTTOM into grass. You must wait for allies, becose you haven't got any chance in 3vs1 fight. You can only run out with Q. How long Q is activing, your movement are rising. On last seconds, you have got higher speed than 600. Don't use potions yet. Using B is better. After first minions spawn, stay defense. You are tank not DPS yet :D

FIGHT 1vs1

1. Use Powerball and go to enemies.
2. Use Tremors when enemies are close.
3. Use Defensive Ball Curl, when you hit him
4. Use Puncturing Taunt, when he try to run out.
5. Kill him with Powerball.

Fight 1vs3
1. Taunt CC-character
2. Use Powerball to run out

Fight 3vs3
1. Hit they with Powerball
2. Active Tremors
3. Use Defensive Ball Curl and taunt DPS or Spellcaster.

When your team hasn't got Exhaust, TAKE IT. In team fight is very useful

I don't like write very much and i can't do this :D

THANKS FOR READING

Don't criticize, make better :D