i dont get it as a jungler you will have to rush this item and get it fast than make sure your constantly farming
and around 25-30 min you will have 30 stacks right
now if you go and build this on an adc you will have devourer and you will most likely still be in lane for a litle while so by the time you finaly get the 30 stacks
shouldnt the game pretty much already been over a long time ago ?
I've gotten 30 stacks at 15 - 18 minutes. It's not that hard. Just AFK farm until there's an obvious opportunity to gank, get the gold, back, get Devourer, and prioritize Scuttle, Dragon, and enemy champions.
Devourer on ADCs is also broken. Vayne's W applies in 2 auto attacks, Twitch's passive can be applied to an entire team instantly basically. Yeah...
Yes, yes it shou;d have been. If you rush it, you will lose to the other carry that rushed Infinity Edge (they've got BF sword + Cloak of agility around the time you get devourer). Unless you're constantly taking your jungler's farm or counterjungling, you're only getting stacks from kills, assists, and dragons. Even if you get ten stacks from KDA, you need four dragons which is 24 minutes + the time to actually buy devourer. So it's 35 minutes into the game by the time you're stacked up and both ADCs are approaching full build. You've got a slot set to ~90 magic damage on-hit, they've got an extra 35% crit chance, which works out to about 105 physical damage on hit assuming 200ish AD and Infinity Edge.
Unless you have crazy-good on-hit effects in your kit (i.e. you are Vayne) you actually give up a fair bit of damage getting Devourer over a Phantom Dancer. You also delay your power spikes because you need to rush the Devourer for stacks. That means buying Attack Speed before having any Attack Damage or Critical Hit chance, which is a sub-optimal use of your gold. You also give up a summoner spell for it, so you're easier to kill in the laning phase and less likely to get kills.
It might work on some hypercarries because of on-hit effects or synergy with BotRK, but you're locked into one build path. You need to rush Devourer for the stacks, and you need to get a BotRK ASAP because BotRK is the only way a Devourer ADC and keep up with an IE + PD ADC. Your opponents should be abusing your weaker early game (due to bad early items and slow scaling) to prevent you from getting kills and dragons. If you can't stack, your build is useless.
