Marchesa the Lich Queen Queen Marchesa | Illustration by Kieran Yanner Commander (1) Creature (11) Auramancer Crypt Ghast Erebos, God of the Dead Ethereal Champion Exquisite Archangel Fountain Watch Kuro, Pitlord Mesa Enchantress Platinum Angel Vilis, Broker of Blood Wall of Blood Sorcery (9) Approach of the Second Sun Demonic Tutor Faithless Looting Idyllic Tutor Merciless Eviction Read the Bones Repay in Kind Reverse the Sands Three Dreams Instant (8) Angel's Grace Chance for Glory Dismember Fire Covenant Glorious End Slaughter Pact Stunning Reversal Teferi's Protection Artifact (8) Bolas's Citadel Lich's Mirror Lich's Tomb Sol Ring Soul Conduit Talisman of Conviction Talisman of Hierarchy Wayfarer's Bauble Enchantment (25) Animate Dead Aura of Silence Axis of Mortality Cruel Reality Curse of Death's Hold Curse of Disturbance Curse of Misfortunes Curse of Opulence Curse of Vitality Demonic Pact Havoc Festival Indestructibility Leyline of Sanctity Leyline of the Void Lich Lich's Mastery Near-Death Experience Oblivion Ring Overwhelming Splendor Phyrexian Unlife Revel in Riches Smothering Tithe Solemnity Sphere of Safety Sulfuric Vortex Land (38) Barren Moor Blood Crypt Bloodstained Mire Boros Garrison Boros Guildgate Buried Ruin Command Tower Glacial Chasm Mountain x5 Orzhov Basilica Plains x9 Rakdos Carnarium Reliquary Tower Swamp x11 Tainted Field Terramorphic Expanse Tired of losing

Right now, its unclear what promos well be getting elsewhere in the world
The first layer is similar to The Ozolith, as it preserves your +1/+1 counters when creatures leave the battlefield, but there's more to unpack here
Per EDHREC, Teferis Imp is played in 144 of the 1.8 million decks playing blue
What makes this good in the deck is that it is a rare example of a green card that is effective at killing creatures
At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature