Kalista's spirit blocks snowball in ARAM
Literally stops when it hits it - and it doesn't do damage. It's not supposed to do this.
-> 
Literally stops when it hits it - and it doesn't do damage. It's not supposed to do this.
-> 
It's a minion, just like Malz critters, Annie's Tibbers, all of which block snowballs. Pretty sure working as designed.