Sefris of the Hidden Ways (Display Commander) - Thick Stock #3

Whenever one or more creature cards are put into your graveyard from anywhere, venture into the dungeon. (Enter the first room or advance to the next room.) Create Undead — Whenever you complete a dungeon, return target creature card from your graveyard to the battlefield. This card is significantly thicker than a standard MTG card and may not be playable.