For general card quality Demonic is not all that yet it retains a high rating because it can allow for more unusual decks and very specific card quality
But instead of being an enchantment or creature like most, it's an instant instead, and in a color that rarely if ever gets spells like that
This card can also be used as a Ritual since each card returned to your graveyard gives you an Eldrazi Spawn token which can be used for mana later on
x2 Spell Snare Sorcery (4) Boomerang Basics x2 Iroh's Demonstration x2 Land (22) Agna Qel'a x2 Island x6 Mountain x2 Riverpyre Verge x4 Spirebluff Canal x4 Steam Vents x4 Sideboard (15) Annul x2 Broadside Barrage Disdainful Stroke Flashfreeze x2 Quantum Riddler x2 Sear Slagstorm x2 Soul-Guide Lantern Spell Pierce Three Steps Ahead Wan Shi Tong, Librarian This is one of the most common decks to run into in MTG Arena right now, partially thanks to its good commons and uncommons, and its a very powerful and synergistic deck
Jace, Wielder of Mysteries has 4 loyalty and a win-con attached to win when you draw from a vacant library
Yes, 50 recent decklist(s) are listed in the Recent decklists section above.
