Samira is a playmaking, AOE oneshot monster.
Samira scales pretty well cuz ur dmg output is disgusting after IE.

Her early game is pretty good with a good combo u can look for all ins at lvl 2 your lvl 1 is really weak so dont trade.
Wait for ur support to engage and follow with passive.

As soon as u have shieldbow and dirk u can 1v2 most botlanes if they dont have much cc. Use ur W to dodge improtant spells or Autos and combo to get ult and melt them.
You can look for skirmishes with ur team for objectives, samira at 1 item is stronger than most other adc's.

Your late game is really good at 3+ Items u need to wait in teamfights for enemy important CD's to be used like leona ult, ahri charms etc then wait for a good opportunity to stack your ult on a tank and then dive enemy backline your dmg at IE is disgusting and your able to solo carry fights and games.

Samira is a really fun and mechanical Champion once u get the hang of her combos its not that hard but doing her combos fast and consistent is pretty hard. SHe has insane playmaking potential and solo carry potential one good ult can win u the entire game.