Hi there!

Cephalid Vandal's ability reads

At the beginning of your upkeep, put a shred counter on Cephalid Vandal. Then put the top card of your library into your graveyard for each shred counter on Cephalid Vandal.

The Torment FAQ says

You put cards from your library into your graveyard one at a time, not all at once. The order of the cards in your graveyard is determined by the order of your library.

So I understand that this differs from “Put the top X cards … where X is the number…” because in that case, I would be able to choose the order of the cards put into my graveyard.

But then the question is: Can the ability of Sidisi, Brood Tyrant trigger multiple times during the resolution of Cephalid Vandal's ability? Or is it still considered a single event that moves X cards, and Sidisi's ability cannot trigger more than once?

Thank you in advance,

Mario Hassler