Mountain (4) [Arena League 1996]Set: Arena League 1996 Type: Basic Land Mountain Rarity: Rare ({T}: Add {R}.)

then shuffle and put that card on top

Set: XY: Ancient Origins Type: Psychic Rarity: Promo Retreat cost: Colorless

you might as well trade it for something else

Set: Sword & Shield: Chilling Reign Type: Lightning Rarity: Ultra Rare Retreat cost: Colorless

Set: Sun & Moon: Cosmic Eclipse Type: Dragon Rarity: Secret Rare Retreat cost: Colorless

sacrifice Serendib Djinn

Set: World Championships 2006 Type: Grass Rarity: Uncommon Retreat cost: Colorless

Sacrifice Aura of Silence: Destroy target artifact or enchantment

Set: World Championships 2018 Type: Fighting Rarity: Holo Rare Retreat cost: Colorless

Set: Sword & Shield: Black Star Promos Type: Fighting Rarity: Promo Retreat cost: Colorless

Set: Skyridge Type: Fire Rarity: Common Retreat cost: Colorless

Metal Rarity: Holo Rare Retreat cost: 0