Advanced format ruling
Amulet of Ambition
Card effect (current official text)Equip only to a Normal Monster. If it battles a monster with a higher Level, the equipped monster gains 500 ATK x the difference in Levels, during that damage calculation only. When this card is sent to the GY: You can place it on top of your Deck.
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.