Advanced format ruling
Dora of Fate
Card effect (current official text)You can only activate this card during your opponent's turn. Select 1 face-up monster on your opponent's side of the field. When you Normal Summon a monster that is 1 Level lower than the selected monster during your next turn, inflict damage to your opponent's Life Points equal to the Level of the selected monster x 500 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.