Obnoxious Micro-"Cast Times"

I"m so sick and tired of this shit. Did you Garen Ulti at the last second before you die for a clutch kill? NOPE, animation plays and everything but you just die and hte ult fizzles. Udyr Bear-stance someone in their jungle? NOPE, they walked into a bush so your attack "MISSES" and you lose a free kill. I've even seen a case where Veigar's Wall literally came out and was on the field, then instantly disappeared because Veigar died