Why build Bloodthirster first on Ashe rather then Infinity Edge?
I was introduced to the idea of building Bloodthirster on ashe first from watching LoL youtubers who stated that pro-players also do this. I get that Ashe doesn't crit normally but I don't understand why build bloodthirster first vs Infinity Edge first? Infinity Edge increases Ashe's crit chance but as bonus attack damage to frosted enemy targets, in addition to the 250% crit damage increase to her passive. Wouldn't the damage of IE exceed Bloodthirster's sustain and shield? Why would a player go for Bloodthirster first? and What is the pros and cons of having such an item first compared to IE?