No hate to development or anything, I know I don't know the first thing about the difficulty of the job. But it seems odd to me that a team of dedicated specialists can miss simple infinite combos in a single set that hordes of fnm players see the moment they're spoiled. Any thoughts on why this occurs?
Multiple million players playing five minutes of Magic is more playtesting than we have of all our play testing combined.
Also, Un-Sets aren’t playtested looking for broken combos. That kind of stress testing is just done on Standard-legal sets.