Avatar of Will — ruling 1

The mana value of this card is still 8, even if you only pay {U}{U} to cast it.

Avatar of Will : règles, fonctionnement et interactions (MTG)

Avatar of Will 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

If an opponent has no cards in hand, this spell costs less to cast. Flying

How it works : Avatar of Will

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
The mana value of this card is still 8, even if you only pay to cast it.
No other card is named in this ruling.