Intruder Alarm [Stronghold] God You can only use this

You can only use this effect of “Sinister Serpent” once per turn

Set: Sun & Moon: Cosmic Eclipse Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Set: Best of Promos Type: Grass Rarity: Promo Retreat cost: Colorless

−X: Search your library for an artifact card with mana value X or less

Tribute this face-up card on your side of the field to destroy all Attack Position monsters on your opponent''s side of the field and inflict damage to your opponent''s Life Points equal to the combined original ATK of those destroyed monster(s)

Intruder Alarm [Stronghold] God You can only use thisSet: Stronghold Type: Enchantment Rarity: Rare Cost: {2}{U} Creatures don't untap during their controllers' untap steps. Whenever a creature enters the battlefield, untap all creatures. Mirri was startled by Volrath's apparitionit had no scent.