Advanced format ruling
The Agent of Force - Mars
Card effect (current official text)This card is unaffected by any Spell Cards. While you control a face-up "The Sanctuary in the Sky" and your Life Points are higher than your opponent's, this card gains ATK and DEF by the difference between your and your opponent's 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.