Gravekeeper's Supernaturalist (Common)

2 Gravekeeper's monsters
Gains ATK/DEF equal to the combined original Levels of the materials used for its Fusion Summon x 100. While Necrovalley is on the field, this card, and any card in your Field Zone, cannot be destroyed by card effects. During your Main Phase: You can activate this effect; during the End Phase of this turn, add 1 Gravekeeper's monster or 1 Necrovalley card from your Deck to your hand. You can only use this effect of Gravekeeper's Supernaturalist once per turn.