Tip
Orianna will have no means to push Jayce back, so avoid being hit with To the Skies! (Q). Use your Command: Attack [Q] – Command: Dissonance [W] combo to contest lane while dodging his Acceleration Gate (E) - Shock Blast (Q) pokes. Keep in mind that Jayce will easily kill you if you step in his range.
Orianna vs Jayce



