Blind/Spell immune/parry/invul abilities basically

so, lets start from Teemo , yes i understand the blind i dont get why it doesnt make any logic to anyone when they question it Blind = you cant see (see Graves/Quinn) although if Teemo blinds you, you can still see how you are dying. Fiora randomly uses W even if she doesnt hit any target to parry Karthuss ulti ( really? parry? a spellcast? i mean she is a sword wielder not a freaking ninja wizard) Morganas shield spell immune to Zed`s ulti WHAT?!?!?! PLEASE CHECK OTHER GAMES WITH BASIC LOGIC blinds= blinds , spell immune = spell immune not blind=spell immune and your retarded way of seeing things.