Corpse Cobble [Innistrad: Double Feature] Zombie Mongoose You may cast any number

You may cast any number of spells from among the nonland cards exiled this way without paying their mana costs

When Murderous Rider dies

Set: Jumpstart 2022 Type: Instant Rarity: Uncommon Cost: {W} Target blocking creature gets +7/+7 until end of turn

Set: Innistrad: Double Feature Type: Sorcery Rarity: Uncommon Cost: {4}{R} Create a red Elemental creature token with trample and "This creature's power and toughness are each equal to the number of instant and sorcery cards in your graveyard plus the number of cards with flashback you own in exile

Return them to the battlefield tapped under their owner's control at the beginning of the next end step

Corpse Cobble [Innistrad: Double Feature] Zombie Mongoose You may cast any numberSet: Innistrad: Double Feature Type: Instant Rarity: Uncommon Cost: {U}{B} As an additional cost to cast this spell, sacrifice any number of creatures. Create an X X blue and black Zombie creature token with menace, where X is the total power of the sacrificed creatures. Flashback {3}{U}{B} (You may cast this card from your graveyard for its flashback cost and any additional costs. Then exile it.)