Skull Guardian [TP2-007] Rare Code of the Duelist you can substitute this card

you can substitute this card for a Tribute(s)

They can not be Tributed for a Tribute Summon

Set: XY: Steam Siege Type: Metal

Set: Gold Series: Haunted Mine Card type: Normal Monster Rarity: Ghost/Gold Rare Attack: 3000 Defense: 2500 This legendary dragon is a powerful engine of destruction

Look at your opponent''s hand

Skull Guardian [TP2-007] Rare Code of the Duelist you can substitute this cardSet: Tournament Pack 2 Card type: Ritual Monster Rarity: Rare Attack: 2050 Defense: 2500 This monster can only be Ritual Summoned with the Ritual Spell Card Novox's Prayer. You must also offer monsters whose total Level Stars equal 7 or more as a Tribute from the field or your hand.