Blitzcrank vs Galio

Fire Rocket Grab (Q) from a brush or a side angle: it grabs the first enemy hit, so you need a line without minions.

After a successful grab, cast Power Fist (E) right away: your next auto knocks the target into the air and deals double damage.

Sometimes engage without a grab: rush in with Overdrive (W), knock your target into the air with Power Fist (E), and save Rocket Grab (Q) for when they Flash away.

Use Mana Barrier (passive) to bait: at low health you get a shield based on your mana, enough to make a kill look easy.

In teamfights, save Rocket Grab (Q) for their carry and wait for them out of vision: grabbing them before the fight starts often decides it.

Take a trade after Justice Punch (E): it's his only dash, on an 11 to 7 second cooldown.

If you deal physical damage, lean on it in trades: the passive shield of Shield of Durand (W) only absorbs magic damage.

Leave the area while he charges Shield of Durand (W): the longer he charges, the longer and wider the taunt.

Before diving one of his allies, check where Galio is: Hero's Entrance (R) flies him in from long range to an allied champion, and his landing is a knock-up.