Blitzcrank vs Renata Glasc

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.

Stay behind your minions: Handshake (Q) roots the first enemy hit, then can throw them into their allies.

Step up when Handshake (Q) misses you: it's her only root, with a 16-second cooldown at every rank.

If you can engage, target Renata: her kit has no dash to escape.

Spread out from your allies when she casts Hostile Takeover (R): berserk, you attack the nearest unit, your allies first.

When an enemy survives thanks to Bailout (W), back off rather than offer a kill: they lose their health over 3 seconds, and only a takedown saves them.