Rotting Regisaur
Creature — Zombie Dinosaur
At the beginning of your upkeep, discard a card.
"Now, *that's* a zombie!" —Modriss of Zargoth Fen
Randy Vargas
The List (PLST)
• #M20-111Rulings
If you have no cards in hand when Rotting Regisaur’s triggered ability resolves, you simply don’t discard any cards. There’s no penalty for being unable to do so.
(wotc • 2019-07-12)
Because the upkeep step is before the draw step, you discard for Rotting Regisaur’s triggered ability before you draw a card for your turn.
(wotc • 2019-07-12)
Rulings
If you have no cards in hand when Rotting Regisaur’s triggered ability resolves, you simply don’t discard any cards. There’s no penalty for being unable to do so.
(wotc • 2019-07-12)
Because the upkeep step is before the draw step, you discard for Rotting Regisaur’s triggered ability before you draw a card for your turn.
(wotc • 2019-07-12)