The latest patch had completely altered Ezreal's value as an ADC. This was chiefly due to the changes to his W-skill, which meant he'd lost a significant edge in combat.
Despite this, Luocheng had the highest winning rate on Ezreal out of all his champions. He'd gotten used to the idea that securing Ezreal for himself meant securing victory.
That just went to show how thoroughly he'd mastered this champion.
He'd looked through Shallow Dream's match history, previously. Among the champions she'd been using, Vayne appeared no small number of times.
Of course, there was no way any mainline ADC player would not be familiar with Vayne, just as every Jungler had to know how to play Lee Sin. The difference was in individual tendencies, play-style, and tactics.
***
Luocheng didn't know who Shallow Dream was, nor did he much care at the moment.