Six sam ruling question

hey guys could someone help answer this question say i have a bottomless trap hole facedown and during my opponents turn he summons zanji, then through his effect grandmaster, and master shien through his effect can me chaining bottomless remove all three of them or will it just be zanji?

The only way bottomless would hit all of them is if they were all summoned at the same time (eg: return from a different dimension).