Miss Fortune vs Aurelion Sol

Fire Double Up (Q) at a dying minion in front of a champion: if the shot kills the minion, the bounce onto the champion always crits.

Switch targets often: Love Tap (passive) adds damage on each new target, and lowers the cooldown of Strut (W).

Activate Strut (W) to get in position before Bullet Time (R): you instantly gain its max move speed bonus, plus attack speed.

Cast Bullet Time (R) on enemies who are CC'd or bunched up in a chokepoint: it's a channeled cone, and each wave can crit.

Stay behind your minions: Breath of Light (Q) hits the first enemy in its path, and only the seconds spent on a champion give him Stardust.

Play hard early and don't let the game drag on: with Cosmic Creator (passive), each of Aurelion Sol's abilities grows permanently stronger through Stardust.

Leave Singularity (E) quickly: it pulls you toward its center, where it executes enemies below a health threshold, and each second inside gives him Stardust.