How Long is "Hextecvh Crafting" going to last?

what do you mean "how long is it going to last" It's meant ot be a permanent addtion to League of Legends.

It's meant to stay.

However you only get a box if you spend rp on it or get S rank on a champion. Also you can only get 4 boxes through S ranks a month. Also you can't use the same champion more than once a season to earn a box.

So first few boxes are going to be easy to get but later ones are going to keep getting harder as you would need to play more and more champions very well to earn them