Jinx vs Swain

Poke with Fishbones, the rocket launcher of Switcheroo! (Q), for its range and splash damage, then swap back to the minigun for long trades.

Fire Zap! (W) to kite the bruiser running at you or catch an enemy who's fleeing: it slows and reveals the first enemy hit.

Throw Flame Chompers! (E) in the path of their engage or their escape: they root the champion who steps on them and last 5 seconds.

In teamfights, focus the lowest-health target first: each takedown triggers Get Excited! (passive), a big boost to attack speed and move speed.

Fire Super Mega Death Rocket! (R) to finish a fleeing enemy rather than to start a fight: its damage grows with their missing health and over its first second of flight.

Get out of the Nevermove (E) path as it comes back: it only roots on its return to Swain, then he can pull each rooted champion to him.

Leave the area as soon as Vision of Empire (W) appears: it strikes and slows 1.5 seconds later, and each champion hit gives him a Soul Fragment.

During Demonic Ascension (R), back off and hit from range if you can: he only drains nearby enemies, and his form ends when he stops draining.

If you have Grievous Wounds, apply it during Demonic Ascension (R): the drain heals him every second, and that healing keeps him alive.