Level up to 4 early if you want to start a win streak. Level up to 5 to try and continue the streak.
If you're weak in the early game, you can opt to save gold and lose streak instead.
At Round 3-2, level up to 6 regardless of your start. Put together the strongest team you can.
At Round 1, level up to 7. Roll down to stabilize your comp if you are weak. Afterward save up to hit level 8 and complete your comp.
Draven already has a lot of built in Armor Piercing with his passive, so you won't need to build Last Whisper. A VIP Draven will also have infinite range, so focus on scaling his damage through things like Crit, Hurricane, and a strong third item like Bloodthirster or Quicksilver for some defense.
When an ally dies, they grant the Debonair VIP 30% of their maximum Health for the rest of combat. Gain a Syndra.
Debonair champions take 15% less damage. Gain a Leona.
Gain 2 Debonair Emblems.