Keep leaning on Q until the opponent has already spent the spell that stops you, because Pantheon’s clean lane trades start when W lands on a target with no answer left, not when you leap first and hope the stun creates the opening
On Pantheon, E is the part that makes the commit real—use it to catch the return burst, the tower shot, or the exact retaliation window you planned for, and only then worry about the flashy empowered-W into Q sequence mains talk about
Level 6 often means you stop trying to solve mid lane directly and start using Grand Starfall to widen the game, and the recent data supports that current Pantheon mid holds together better than comparable AD mids when lane is only a little behind and when games run long
Into mages, the goal is usually to stay healthy enough that your first real move still exists. Start by letting thrown Q do more of the lane, keep your passive useful, and do not burn W just because they gave you a small opening if their main punish spell is still up. Doran's Shield and patient potion timing matter here because once you get chunked, the lane can pin you in place and your level-6 pressure disappears. If the wave looks a little ugly but you still have HP, mana, and summoners, you are often doing fine. You are buying time for a better roam or a cleaner commit.
Every few spells or attacks, Pantheon's next spell is empowered.
Pantheon either thrusts his spear or throws his spear in the chosen direction.
Pantheon dashes to a target, damaging and stunning them.
Pantheon sets his shield, becoming invulnerable to damage from the front and striking repeatedly with his spear.
Pantheon composes himself and then leaps into the air, landing at a chosen location as a comet.