Ghoultree — ruling 1

Ghoultree’s ability can’t reduce the total cost to cast the spell below {G}.

Ghoultree — ruling 2

Once you begin to cast Ghoultree, no player may take actions until you’re done. Notably, opponents can’t try to remove creature cards from your graveyard to change Ghoultree’s cost.

Ghoultree : règles, fonctionnement et interactions (MTG)

Ghoultree 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

This spell costs less to cast for each creature card in your graveyard.

How it works : Ghoultree

Original English text — Wizards of the Coast / Scryfall

#1January 24, 2025· Wizards of the Coast
Ghoultree’s ability can’t reduce the total cost to cast the spell below .
No other card is named in this ruling.
#2January 24, 2025· Wizards of the Coast
Once you begin to cast Ghoultree, no player may take actions until you’re done. Notably, opponents can’t try to remove creature cards from your graveyard to change Ghoultree’s cost.
No other card is named in this ruling.