https://media.discordapp.net/attachments/859221046368141332/952598080807645294/unknown.png
If there's a two way tie, it's dependent on head to head. If Acend and G2 both lose their games, it's a tie, and the tiebreaker is the 2-1 series that Acend beat G2 on.
If there's a three way tie, where Guild loses to both G2 and Fnatic, aswell as Acend beating BBL - it's a round difference tiebreaker between the three teams, two best qualify.
edit; incorrect information, post #31 for info/sort of apology or whatever, common mintvalo L