The Rollercrusher Ride

Duskmourn: House of Horror Promos (PDSK) #155s · mythic

Legendary Enchantment

Delirium — If a source you control would deal noncombat damage to a permanent or player while there are four or more card types among cards in your graveyard, it deals double that damage instead. When The Rollercrusher Ride enters, it deals X damage to each of up to X target creatures.