Sheoldred, Whispering One (Phyrexian) [Secret Lair Drop Series] Jellyfish Set: Amonkhet Invocations Type: Instant

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {B} Search your library for a card

Set: The Dark Type: Land Rarity: Uncommon {T}: Untap target attacking creature

Set: Dominaria Prerelease Promos Type: Legendary Planeswalker — Karn Rarity: Mythic Cost: {4} +1: Reveal the top two cards of your library

When Ulvenwald Hydra enters the battlefield

Sheoldred, Whispering One (Phyrexian) [Secret Lair Drop Series] Jellyfish Set: Amonkhet Invocations Type: InstantSet: Secret Lair Drop Series Type: Legendary Creature Phyrexian Praetor Rarity: Mythic Cost: {5}{B}{B} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. At the beginning of each opponent's upkeep, that player sacrifices a creature.