Skirsdag High Priest — ruling 1

Unlike Skirsdag High Priest itself, the two other creatures you tap to activate its ability aren't required to have been under your control continuously since the beginning of your most recent turn.

Skirsdag High Priest : règles, fonctionnement et interactions (MTG)

Skirsdag High Priest is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Morbid — , Tap two untapped creatures you control: Create a 5/5 black Demon creature token with flying. Activate only if a creature died this turn.

How it works : Skirsdag High Priest

Original English text — Wizards of the Coast / Scryfall

#1August 7, 2020· Wizards of the Coast
Unlike Skirsdag High Priest itself, the two other creatures you tap to activate its ability aren't required to have been under your control continuously since the beginning of your most recent turn.
No other card is named in this ruling.