I don’t get the reward I get.
I used 100 yellow crests, after 10 crests / rift
I only got 1 reward, a 5/1 shiny gem. And who knows how many more I didn’t get during the game. Unfortunately I didn’t count, I trusted the game.
Does it make sense to spend it on the game?
What do you mean by yellow crests? The ones that matter in this case are red or purple legendary and eternal legendary crests.
Sorry. Red crests I wrote about!