Sick of you landing mad hooks and no one follows up?
Sick of accidentally taking ADC's kills and thinking how useless it is for all that gold being channelled to you? Worry no more.

Presenting: AP Blitzcrank.

The Self Carrying Golem

A tank support's job is often to engage and peel for your ADC. However, Blitzcrank's Q makes it so that you don't need to be tanky to engage. So why go tank on Blitz? I guess it helps with sustain so you dish out more hooks in your lifetime, and peel your ADC for longer. But honestly, with smart positioning, you can achieve the same effects with AP Blitzcrank, except you 1 shot squishies and provide your team with extra damage.

1) When your team already has a tank
2) At least 3 enemies who aren't bruiser/tank.
3) Team lacks AP

For consistent early and late game damage. Not many other options that would serve as good substitutes

Does extra damage immediately after hook

Bonus AP. You'll have plenty of vision from Nomad's Medallion, so favoured over Ghost Poro

Althought CDR on ult would be nice with Ultimate Hunter, I find the ms from Relentless Hunter more useful for hooks when chasing. Especially with your lack of Mobility Boots

This is a MUST! CDR is very important on AP Blitzcrank and Transcendence will make use of extra CDR bought from items.

Can also choose to go with Gathering Storm. Just that Manaflow Band also stacks with Mana Barrier for that extra bit of sustain.

Rune stats

+1-10% CDR for you to reach 40% CDR faster
+9 Adaptive force Extra AP
Own choice for defense based on enemy team.

Income generator:

Better choice over Relic Shield due to sustained income generated over entire course of the game with Nomad's Medallion. Note: DO NOT upgrade to Eye of Ascension as it has the same income generation as Nomad's Medallion. Keep Nomad's Medallion until nearly full build.

Essentials:

Best goes with your E as it procs Sheen. Also grants CDR, movement speed and mana (for Mana Barrier), all of which are core stats for Blitz.

Again, key stats of CDR and mana and extra dmg from the passive

Choices:

I personally like going Hextech Rocketbelt after Lich Bane and Luden's Tempest for the dash passive to make some clutch hooks. Also provides CDR and HP sustain.

At this point, the 10% CDR from Twin Shadows should be converted into 20 AP due to Transcendence. Hence granting surprisingly a lot of AP. The extra MS is also extremely helpful on Blitzcrank and the active makes landing hooks easier along with just general great utility.

Grants extra tankiness if enemy has some troublesome mages and the UNIQUE Aura is a good bonus for more ap damage immediately after Rocket Grab.

Your squishy nature could make a lot of use out of Zhonya's Hourglass. Combined with Abyssal Mask, makes you a lot tankier to all forms of damage while still being able to dish out a lot of damage yourself. Also worth noting that the extra CDR will be converted to 20 AP due to Transcendence

Straight flat AP but hard to get due to initial 1250g requirements from Needlessly Large Rod, must consider whether or not committing to purchase one is sustainable.

Must have due to your low sustain, often needed to get out of tight spots and flash hooks.

Your AP is often not enough to finish off a full health squishy champion. But ignite often makes it possible. Also helpful when the enemy team has a lot of healing.

Oh boy, you'll be surprised how good this is if played well. Best when playing with Sivir due to her insane wave clear, giving you room to roam. There are essentially 2 uses to smite on Blitzcrank. 1) Smiting caster minions for an immediate surprise Rocket Grab afterwards. 2) Roaming in enemy jungle and with objectives. This will absolutely piss off the enemy jungler if done correctly, requiring a lot of macro skills and vision. Additionally, its very common for blitzcranks to go for an immediate invade when game starts. AVOID THIS when you have Smite. Instead: Wait in tribush -> let your ADC leash your jungler-> walk up behind wall when buff spawns -> Guess when enemy buff is at ~500 hp -> ward -> immediate Rocket Grab -> Smite -> gg ez.

Go out there and make this the new meta please. Good luck not getting flamed initially until they see how much you can actually do :)