Morphling 4

Table of Contents show The Deck Stitcher's Supplier | Illustration by Chris Seaman Commander (1) Planeswalker (3) Ashiok, Dream Render Jace, Wielder of Mysteries Wrenn and Seven Creature (22) Baleful Strix Caustic Caterpillar Coiling Oracle Doc Aurlock, Grizzled Genius Evolution Witness Fleshbag Marauder Gravebreaker Lamia Hostage Taker Liliana, Heretical Healer Mazirek, Kraul Death Priest Plaguecrafter River Kelpie Rootcoil Creeper Sakura-Tribe Elder Six Spore Frog Stitcher's Supplier Syr Konrad, the Grim Tatyova, Benthic Druid Teval, the Balanced Scale The Gitrog Monster Underrealm Lich Instant (2) Sorcery (4) Bala Ged Recovery Torment of Hailfire Villainous Wealth Worm Harvest Enchantment (9) Animate Dead Dance of the Dead Elspeth's Nightmare Pernicious Deed Phyrexian Scriptures Seal of Primordium Secrets of the Dead The Eldest Reborn The Mending of Dominaria Artifact (12) Arcane Signet Chromatic Sphere Commander's Sphere Expedition Map Hedge Shredder Hedron Archive Lightning Greaves Mind Stone Mindslaver Sol Ring Tormod's Crypt Wayfarer's Bauble Land (36) Breeding Pool Command Tower Deathcap Glade Dreamroot Cascade Drowned Catacomb Esper Panorama Evolving Wilds Foreboding Landscape Forest x6 Ghost Quarter Grixis Panorama Hinterland Harbor Island x5 Jund Panorama Lonely Sandbar Overgrown Tomb Petrified Field Shipwreck Marsh Sunken Hollow Swamp x5 Terramorphic Expanse Watery Grave Woodland Cemetery Ive played Muldrotha, the Gravetide in just about every format you can play on MTG Arena

Phoebe, Head of S.N.E.A.K
Cave of the Frost Dragon
Once a great blue staple in graveyard decks, its since been passed over by the likes of Consider, which just gives better options when it comes to putting cards into the graveyard (altough it's still unmatched among the most disturbing pieces of Magic art)
Which is good, since her second ability turns her into a juggernaut on the battlefield