Camille vs Swain

Wait a moment before the second Precision Protocol (Q) attack: after a short delay, it hits harder and part of its damage becomes true damage.

Hit your opponent with the outer half of Tactical Sweep (W): they are slowed, take extra damage, and you heal for part of it.

Fire Hookshot (E) at a wall near your target, then leap: you stun champions where you land, and the leap goes twice as far toward a champion.

Cast The Hextech Ultimatum (R) on their carry: they can't leave the zone, other nearby enemies are knocked away, and you interrupt their channels.

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.