Talk:ARAM/@comment-12183650-20130713235913/@comment-31982182-20170530144520

I would guess it's not that tilted in terms of likelihood.

There does seem to be an increased chance for the free rotation, but that makes sense because the point is that everyone has a chance to try them. And if you grind ARAM and never play Rift, you kinda need that higher chance if you want a shot at trying them.

And probably, lets say you own Xayah, and she's free for the week, that her name is in the hat twice for everyone that owns her. And if being free for the week makes her chance already more than just 1/X, then that increased chance would probably get doubled. Which is why you'd see a lot of free champs in every game.

But I've also had games where NONE of the 10 are the free rotation. So I really don't think it narrows down the pool based on most owned. If you own nearly all of them, and the free rotation has a higher chance, then all your others are just less likely, less than a 1% chance because of 136 champs, and unless you're grinding hundreds of games you're not likely to see them.