When you have a combo people dont scoop to. There needs to be a way to set up a loop. Let the opponent step through it from [0, N] steps. They could jump to N-1 steps (say they want to skip to the end and interact with Thassa's Oracle's trigger).

Probably a WHEN() function is nice. Like WHEN(library, 1 card).

Can this be more automated? Yes. But lets do this right to make MTGA robust. (And please dont show me 1000 triggers resolving 1 by 1)