Cheese, kill, and snowball.
Durability and crowd control
After immobilizing an enemy champion gain defenses and later deal a burst of adaptive damage around you.
Charge up a powerful attack against a tower while near it.
Restore health over time based on your missing health.
Increase your Tenacity and Slow Resistance for each summoner spell on cooldown. Immediately after casting a Summoner Spell, gain a larger burst of Tenacity and Slow Resistance for a moderate duration.
Creative tools and rule bending
Get a free biscuit every 3 minutes, until 12 minutes. Biscuits heal and permanently increase your max mana.
+5% Max CDR
+5% Summoner Spell CDR
+5% Item CDR
As Blitz you can easily proc Aftershock to continue fighting. The explosion further assist in kill potential.
Demolish on Blitzcrank is great for snowballing early lane picks/kills into meaningful tower damage and early gold advantage.
Second Wind's mid-fight health sustain is great for level 2 all-ins and lane trades where the extra health can be the difference between death or a double kill.
Unflinching on Blitz allows you to stick to your target after hooking them so you can follow up provide extra CC and damage.
Biscuit Delivery paired with Second Wind and Bone Plating make you a resilient tank in skirmishes as well as allow you to shrug off any incoming poke damage.
More CDR from Cosmic Insight means more chances for hooks and teamfight CC with [E].