Which formats and decks do you use them in
The black core is an integral part of the design, as it effectively blocks light rays from shining through the cards, enhancing the opacity and providing a distinctive look and feel
Especially when being on the play, I personally think the relevance of a discard spell even increased since stronger creatures like Ragavan, Nimble Pilferer entered the format since Modern Horizons 2
Sadly it is also a lot less playable needing good support for the delve aspect
Here are the current price tags for these cards, in order of value: Jace, the Mind Sculptor: $100 Rishadan Port: $95 Force of Will: $70 Emrakul, the Aeons Torn: $40 Leovold, Emissary of Trest: $38 Phryrexian Obliterator: $30 Demonic Tutor: $30 Land Tax: $24 Vengevine: $20 Scourge of the Throne: $20 Umezawas Jitte: $20 Platinum Emperion: $18 Elspeth, Suns Champion: $10 Nicol Bolas, Planeswalker: $8 Koth of the Hammer: $8 This set of fifteen mythics would give us a grand total of $553, which is about 17% higher than the value of the MM17 mythics heading into spoilers