Boneyard Mycodrax — ruling 1

The ability that defines Boneyard Mycodrax’s power and toughness works in all zones, not just on the battlefield.

Boneyard Mycodrax — ruling 2

The number of counters given by Boneyard Mycodrax’s scavenge ability is its power as it last existed in your graveyard before exiling it. Players can’t change how many counters it gives out after you’ve activated the ability by changing what’s in your graveyard.

Boneyard Mycodrax : règles, fonctionnement et interactions (MTG)

Boneyard Mycodrax 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

Boneyard Mycodrax's power and toughness are each equal to the number of other creature cards in your graveyard. Scavenge (, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

How it works : Boneyard Mycodrax

Original English text — Wizards of the Coast / Scryfall

#1April 17, 2020· Wizards of the Coast
The ability that defines Boneyard Mycodrax’s power and toughness works in all zones, not just on the battlefield.
No other card is named in this ruling.
#2April 17, 2020· Wizards of the Coast
The number of counters given by Boneyard Mycodrax’s scavenge ability is its power as it last existed in your graveyard before exiling it. Players can’t change how many counters it gives out after you’ve activated the ability by changing what’s in your graveyard.
No other card is named in this ruling.