A potential 30% damage reduction ( if u have enough damage to outheal the DoT, which easy for ADC thanks to crits ) that is always up and synergizes with heals + shields too is way much better than a Shield just at the start of the fight.
Also the Lifesteal applies to ur spells + extra 10% cdr.
Damn boys u dont need to be Einstien to figure why
is the best thing to get on all AD champs no matter what.
ADCs, Assassins, Fighters and even some AD tanks ( minus the
on tanks ).
Rankeds are full of scrubs who dont know what to build or who to pick ... only follow streamers and pro scene even when wrong.
[zombie-nunu-bummed]