Forgotten Cave [Mystery Booster] Phyrexian Demon you may cast a spell

you may cast a spell from your hand without paying its mana cost

This Genesis Impact booster box contains 24 booster packs in total

Set: Dark Crisis Card type: Normal Trap Rarity: Ultra Rare Attack: 0 Defense: 0 You can only activate this card when your opponent declares an attack with a monster on his/her side of the field that has been Tribute Summoned or Set

you can select 1 "Synchron" Monster in your Graveyard and Special Summon it

Sacrifice another creature: Yahenni gains indestructible until end of turn

Forgotten Cave [Mystery Booster] Phyrexian Demon you may cast a spellSet: Mystery Booster Type: Land Rarity: Common Forgotten Cave enters the battlefield tapped. {T}: Add {R}. Cycling {R} ({R}, Discard this card: Draw a card.)