Advanced format ruling
Forbidden Chalice
Card effect (current official text)Target 1 face-up monster on the field; until the end of this turn, that target gains 400 ATK, but its effects are negated.
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.