Hello, and welcome to my guide for blitzcrank. Blitzcrank is my favorite champion, and I've been playing him for a year now. Purchasing him was the best 6300 IP I have spent in all of my LoL time.

PROS
Support blitzcrank can feed carries well.
Mana barrier saves your life all day.
Dat grab.
Tear of the Goddess causes your mana barrier to reach full potential.
Bait!

CONS
Requires a good burst champion / AD carry to do well.
Grabbing Amumu can spell DOOM for your team.
Requires good skillshots with Rocket grab.

I went with fairly standard support tank runes. 3 quints of Avarice and 8 seals of Avarice for the gp10, 9 glyphs of warding, 9 marks of resilience and a seal of warding so that Blitzcrank is more tanky early game.

I went with 0/9/21 for Blitzcrank. I went with experience boosts in the utility tree, as I have found that support blitzcrank does not need much gold to be successful, and most of the gold he needs will be gotten with assists. I also maxed Strength of Spirit, because more mana = more tanky blitzcrank.

Always show up at teamfights. A good blitzcrank can grab a squishy and turn it into insta-4v5.
Help your teammates with ganks! Blitzcrank can Power Fist and then Rocket Grab when they try to run!