Hi there folks, once again me here with a newbie question.....I’ve seen a select few people building double, even triple Doran’s blades/rings and I was wondering why exactly you would rather than building item components.....my friend said something about increased landing power, but I was hoping if one of y’all could give a more detailed explanation?
It's just a short term trade off.
Many component items are kinda just straight useless in and of themselves. A single Ruby or Sapphire Crystal does not a power spike make. Especially for more fighty champions in the early game, they want the raw power that a Doran's Blade/Ring can offer for the same price point at that time. Generally speaking, if your first back leads to having less than let's say 1300 gold so you can't pick up a midtier item/BF Sword, and truly no component item is useful to you, just grab a Doran's item.
Basically its buying immediate strength to be stronger early. The stats on the dorans items are worth more than the gold to buy them, so often if someone has to back before they have the ~900+ gold to buy an item component 
they'll by A dorans item to give them more power now than they would get with 
/
.
The drawback is you eventually have to sell them to make room for better items and take a net gold loss.
Let's say you made the gambit.
Enemy build: 
1700g 55AP 300 mana
Your build: 1670g 70 AP 120HP Mana regen equal to lost chapter + minion waveclear passive that stacks.
The enemy's next item would be blasting wand 40 ap (850g) so they have a lag time to actually spike that costs something more than a kill and a simple lead. While you can make your lost chapter components for MORE pushing to dominate the early game. The only drawback of course is that it can backfire.
i dont get double 
but having double gives you 2 mana every second giving you early high mana regen until your mana pool is bigger or have larger mana regen from say 
Saevum3/14/2019, 4:58:09 AMDouble doran blade is a more viable tactic than double doran ring. Hands down.
