Advanced format ruling
A Deal with Dark Ruler
Card effect (current official text)(This card is always treated as an "Archfiend" card.)
If a Level 8 or higher monster under your control was sent to the Graveyard this turn: Special Summon 1 "Berserk Dragon" from your hand or 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.