Underground Mortuary New Stock Untap those creatures and they

Untap those creatures and they gain haste until end of turn

Each spell you cast that's a Demon

Tap five untapped attacking creatures you control named Templar Knight: Search your library for a legendary artifact card

Whenever one or more creatures you control with flying deal combat damage to a player

−2: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile

Underground Mortuary New Stock Untap those creatures and they({T}: Add {B} or {G}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)