User blog comment:Lesdin/Alanor, the Adroit/@comment-11520377-20161216193829/@comment-27802145-20161217091905

Grand Horizon does not make her untargetable. Reason for that being is that it's an ability whose power is offset by how vulnerable it makes Alanor (it's basically a self in essence, save for the fact Alanor can still use abilities, including Heartstriker which moves her). This prevents Grand Horizon from being an ability to be used willy nilly for evasion during skirmishes, but rather a tactical ability that rewards Alanor for using it right (combined with World Piercer), and in turn also punishing her if she uses it wrong (as in limiting herself from moving normally).

As for the kit being divided into long and short range, it was an intentional design choice. It's purpose is to have Alanor be classified as both Artillery and Fighter (a rare, if not a currently non-existent combination; only comes to mind for someone being even close). This allows for Alanor to have unique strengths and weaknesses which provide both a reason for her to be picked over other champions in certain situations, in addition to a whole new counterplay pattern.