Advanced format ruling
Horus' Servant
Card effect (current official text)Your opponent cannot target face-up "Horus the Black Flame Dragon" monsters with Spells, Traps, or card effects.
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.