Since M21, mill has become a keyword that appears all over Magic, especially on blue cards
Aethersquall Ancient Archipelagore Breaching Leviathan Charix, the Raging Isle Grozoth Inkwell Leviathan Jokulmorder Kederekt Leviathan Kiora's Dambreaker Leviathan Nemesis of Reason Nimbus Swimmer Pearl Lake Ancient Segovian Leviathan Simic Sky Swallower Sin, Spira's Punishment Sin, Unending Cataclysm Sky Swallower Slinn Voda, the Rising Deep Starwinder Stormtide Leviathan Summon: Leviathan Thing from the Deep Trench Gorger Xyris, the Writhing Storm
At six-mana, Etherium-Horn Sorcerer can hit plenty of targets in your Commander deck, the format where this card shines
The art on these cards is a bit more bombastic than your typical MTG card, using the entire card frame and breaking through the various text boxes on the card
On turn two this is much more akin to an Impulse than it is to a Demonic Tutor or even a Lim-Dul's Vault