It's like, the one kinda RNG i'd be okay with in League. It adds some spice to each game and forces the player to adapt to the situation.
People complain that LCS games are too samey right? Well with how this works, it could make a huge difference.
The winner of Worlds could be decided by whether the first dragon spawn is an air dragon or a fire dragon. Not quite like crits, which is pretty binary luck, this kinda RNG could favor either red or blue side depending on how each team wants to deal with it.
Probably an unpopular opinion, but i'm honestly okay with it being random.