Underground Mortuary (Promo Pack) [Murders at Karlov Manor Promos] Forest Plains When Toothy leaves the battlefield

When Toothy leaves the battlefield

including dozens of Trainer cards

if they were attacked this turn by an Assassin you controlled

Set: The List Type: Legendary Creature — Dragon Noble Rarity: Mythic Cost: {2}{B}{R}{G} Flying

so this Deck includes cards that grow and change from turn to turn like Red-Eyes Black Flare Dragon and Red-Eyes Archfiend of Lightning

Underground Mortuary (Promo Pack) [Murders at Karlov Manor Promos] Forest Plains When Toothy leaves the battlefieldSet: Murders at Karlov Manor Promos Type: Land Swamp Forest Rarity: Rare ({T}: Add {B} or {G}.) Underground Mortuary enters the battlefield tapped. When Underground Mortuary enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)