Sunken Citadel [The Lost Caverns of Ixalan Prerelease Cards] Hydra Dog and I see in them

and I see in them traces of last year

Set: Jumpstart 2022 Type: Creature — Angel Cleric Rarity: Rare Cost: {4}{W}{W} Flying

"Smoke rises once more from Mount Doom

and library for all cards with the same name as that card and exile them

Destroy target nonblack attacking creature

Sunken Citadel [The Lost Caverns of Ixalan Prerelease Cards] Hydra Dog and I see in themSet: The Lost Caverns of Ixalan Prerelease Cards Type: Land Cave Rarity: Rare Sunken Citadel enters the battlefield tapped. As it enters, choose a color. T: Add one mana of the chosen color. T: Add two mana of the chosen color. Spend this mana only to activate abilities of land sources.