Whoever came up with "build a 3-star champion before level 3-1" should be launched into the sun
Not only does this dog shit mission fuck over your chance of winning by having to reroll all your banked gold by krugs, it isn't even in the realm of realistically plausible. So the end result is being forced to lose games while not even getting the mission goal.
This is as bad or even worse than the PVP summoner rift missions requiring you to play a gimmick team comp and negatively impact your chance of winning.