u/Nealper

Yesterday I was playing Sett and looked him up on onetricks to find out which runes and build to use. To my (mild) surprise, literally every Sett main in high elo goes Stridebreaker, and there is basically zero variety in the next two items. Most go Stride > Cleaver > Bloodmail, with a few going Bloodmail > Steraks or Cleaver > Steraks instead after Stride.

This was surprising even though I knew Stridebreaker is Sett's main item, because most other champions still have some build variety, even if it's gimmicky and flat out worse than their usual core items.

This raised a question, which champion is the most "forced" into a single build path?

Irelia

Irelia was the first champion I thought of. Her kit works so well with Blade of the Ruined King that it's what everybody builds. AP Irelia has recently become a thing-ish thanks to Baus, and I found an Irelia main who goes AP. It seems to have enough gimmicky moments that it isn't a full troll build, but I'd say she's still up there for being bound to BotRK. However, build variety after BotRK is pretty good, with many different paths, so she may not be #1 on this list.

Ezreal

The other champion I thought of was Ezreal. He goes basically the same first three items every game (Trinity > Manamune > Shojin), but I found a fair share of players going Essence Reaver instead, and a lot going Endless Hunger instead of Shojin as the third item. There was also one AP Ezreal Challenger player.

I tried thinking of ADCs but with with the items introduced at the start of this season I feel like every ADC I can think of can go a few different build paths, but I guess they are bound to IE/LDR if you'd count that.

So my question is, what are the champions who are most bound to 1 item and build path and are basically never able to go something else?

Which champion would benefit the most from having inverted damage ratios & types?
All of their abilities would convert to the opposite scaling and damage type, including ones with double scaling already. (ex. Akali's Q)

This would allow some champions to find new builds & items that synergize with their kits, aswell as some champions who's design would probably make for an insane class archetype if allowed to build different items.

The conversion rate will be 1 AD = 1.667 AP, any abilities that have other scaling sources such as health, armor, etc will have those ratios untouched. (however you can also swap Armor for MR if you'd like)

For example, Diana's Q would go from a 210 (+ 70% AP) ratio magic damage move to a 210 (+116.9% AD) physical damage move at max rank.

The rest of her kit would also turn into AD ratios and damage, Imagine a bruiser diana with Eclipse, Black Cleaver, and Death's Dance bursting you the second she decides to go in while also doing insane auto attack damage.

Or, imagine a Crit Sylas with his passive.

Which champion is forced to build 1 item/to follow one build path?

Which champion would be the strongest if he could invert his damage ratios?