black card advantage mtg Skeletal Scrying [Conspiracy] Mono-Black Card Draw Package –

Temporal Extortion is the most valuable with a regular printing being about $20, but Star of Extinction, Day of Judgment, and Toxic Deluge have all been reprinted fairly regularly

Cheap enchantments in this deck also tax the opponent, with Rhystic Study being an infamous example

Top Jeskai Commanders Zinnia, Valley's Voice 18,948decks Kilo, Apogee Mind 17,319decks Satya, Aetherflux Genius 15,036decks Captain America, First Avenger 14,871decks owyn, Shieldmaiden 14,051decks Kykar, Wind's Fury 13,808decks Inspirit, Flagship Vessel 12,242decks Atreus, Impulsive Son // Kratos, Stoic Father 12,210decks Zedruu the Greathearted 12,048decks Sonic the Hedgehog 11,009decks Narset, Enlightened Exile 10,571decks Sokka, Tenacious Tactician 10,294decks Shiko and Narset, Unified 9,149decks Elsha, Threefold Master 8,563decks Commodore Guff 7,434decks Pramikon, Sky Rampart 7,130decks Hinata, Dawn-Crowned 6,838decks Dr

Time Walk (Alpha) Let's do the Time Walk again

More likely that is overkill and something as simple as a pair of large Gaea's Mights can use a Swiftblade to singlehandedly end the game as early as the third turn