#2015 Harrowing Event

Ok rito so ive been a little bit confused, ik the slayer vs zombie skins are coming out this month but will that be all for this halloween? I started playing league on february and since then ive wanted some skins that u can only get in the harrowing event, ive been waiting almost a year to get the underworld skin , skin, skin and skin and now ur telling me ive waited all this time for nothing? dont get me wrong i like the new skins but im just saying that the harrowing skins should be out every halloween, and ik i can get those skins in a mystery box or sometimes in bundles but i didnt buy those because the posibilites of getting the skins i want are SPR low. I just wanted my skins =( , and now idk how to get them maybe next year but now i have to wait another year for that and im not even sure if they will be out then, maybe rito will do the same thing again as they did this year.