The Duke of Demise

"The Earl of Demise" + "Headless Knight" 

This monster cannot be Special Summoned except by Fusion Summon. This card cannot be destroyed by battle. During each of your Standby Phases, pay 500 Life Points or destroy this card.

Water of Life

           Select 1 monster in your Graveyard, and Special Summon it in face-up Attack Position.