Cemetery Desecrator
Creature — Zombie
Menace
When this creature enters or dies, exile another card from a graveyard. When you do, choose one —
• Remove X counters from target permanent, where X is the mana value of the exiled card.
• Target creature an opponent controls gets -X/-X until end of turn, where X is the mana value of the exiled card.
Dan Murayama Scott
Rulings
The controller of Cemetery Desecrator chooses which counters are removed, and they may remove more than one kind of counter. If the target permanent has fewer than X counters, all of them are removed.
(wotc • 2021-11-19)
After you exile a card from a graveyard, another triggered ability goes on the stack. You choose the mode and target as you put that second ability on the stack, not before you exile a card.
(wotc • 2021-11-19)
Rulings
The controller of Cemetery Desecrator chooses which counters are removed, and they may remove more than one kind of counter. If the target permanent has fewer than X counters, all of them are removed.
(wotc • 2021-11-19)
After you exile a card from a graveyard, another triggered ability goes on the stack. You choose the mode and target as you put that second ability on the stack, not before you exile a card.
(wotc • 2021-11-19)