Advanced format ruling
Arcana Force I - The Magician
Card effect (current official text)When this card is Summoned, toss a coin:
● Heads: When a Spell Card is activated, this card's ATK becomes double its original ATK until the End Phase of that turn.
● Tails: When a Spell Card is activated, your opponent gains 500 Life Points.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.