The Mystic Urn is an artifact in Heretic and Hexen. It looks like a grey urn with a golden ankh on it. Using a Mystic Urn restores the player to full health. Unlike Doom's Soulsphere, it can be carried around until needed, but cannot raise the player's health above 100, which makes it similar to the Berserk pack but without the pack's fist improvement power. On skill 1, the Mystic Urn is sometimes used at death, preventing you from dying.

Heretic items
Health	Crystal Vial | Quartz Flask | Mystic Urn
Armor	Silver Shield | Enchanted Shield
Items	Crystal Vial | Map Scroll | Bag of Holding | Ammo
Artifacts	Chaos Device | Morph Ovum | Mystic Urn | Quartz Flask | Ring of Invincibility | Shadowsphere | Timebomb of the Ancients | Tome of Power | Torch | Wings of Wrath

Hexen items
Health	Crystal Vial | Quartz Flask | Mystic Urn
Armor	Amulet of Warding | Dragonskin Bracers | Falcon Shield | Mesh Armor | Platinum Helm
Artifacts	Banishment Device | Boots of Speed | Chaos Device | Dark Servant | Disc of Repulsion | Dragonskin Bracers | Fléchette | Icon of the Defender | Krater of Might | Mystic Ambit Incant | Mystic Urn | Porkalator | Quartz Flask | Torch | Wings of Wrath
Others	Ammo | Keys | Puzzle Artifacts