Advanced format ruling
Contract with the Abyss
Card effect (current official text)This card can be used to Ritual Summon any DARK Ritual Monster. You must also Tribute monsters from your hand or field whose total Levels exactly equal the Level of the Ritual Monster you Ritual Summon.
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.