Wood Elemental — ruling 1

The Forests are sacrificed to define the power/toughness of this card right before it enters. You have to do this sacrifice no matter how this card enters.

Wood Elemental : règles, fonctionnement et interactions (MTG)

Wood Elemental 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

As this creature enters, sacrifice any number of untapped Forests. Wood Elemental's power and toughness are each equal to the number of Forests sacrificed as it entered.

How it works : Wood Elemental

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
The Forests are sacrificed to define the power/toughness of this card right before it enters. You have to do this sacrifice no matter how this card enters.
No other card is named in this ruling.