This is a fantastically flavorful reprint for Duskmourn, and also, believe it or not, a $10 card
Unown K sits squarely in the middle of the road as far as its recent pricing, as this card has shown potential to approach $25, but hasn't quite gotten over the hump yet
Eureka Moment
Abomination of Llanowar Animate Graveyard Apocalypse Demon Bloodsworn Knight Boneyard Mycodrax Boneyard Wurm Candlekeep Inspiration Consuming Aberration Consuming Blob Elephant Resurgence Graveyard Busybody Leonardo da Vinci Lumra, Bellow of the Woods Melek, Reforged Researcher Nethergoyf Old Stickfingers Revenant Seize the Storm Sewer Nemesis Souls of the Lost Splinterfright Sutured Ghoul Svogthos, the Restless Tomb Textbook Tabulator The Capitoline Triad Titania, Gaea Incarnate Umbra Stalker Unlicensed Hearse Urborg Lhurgoyf Wrenn and Seven
Gran-Gran loots and makes your spells cost 1 less, Accumulate Wisdom draws a whopping three cards for 1 mana most of the time, and Combustion Technique becomes a stellar removal spell
I could see 1-2 copies becoming the norm