Infernal Denizen
Ice Age — rare
Creature — Demon
Infernal Denizen rulings:
2004-10-04: You must sacrifice the Swamps if you can. You can’t choose not to pay if you have them.
2004-10-04: You should always have one creature for your opponent to take (i.e. the Denizen). If by chance you have no creature for your opponent to take, then they don’t get one. Remember that taking a creature is optional so your opponent is not forced to take the Denizen.