Accursed Duneyard Accursed Horde Acererak the Archlich Adorned Crocodile Adorned Pouncer Aim for the Head Angel of Sanctions Angrath, Captain of Chaos Anikthea, Hand of Erebos Anointer Priest Aphemia, the Cacophony Aphetto Vulture Archdemon of Unx Archghoul of Thraben Army of the Damned Ashnod, Flesh Mechanist Assemble from Parts Assemble the Rank and Vile Aven Eternal Aven Initiate Aven Wind Guide Awaken the Erstwhile Binding Mummy Bladewing, Deathless Tyrant Bleeding Edge Bone Miser Boneclad Necromancer Boneknitter Bridge from Below Call to the Grave Callous Dismissal Captive Audience Cellar Door Cemetery Reaper Cemetery Recruitment Champion of Wits Champion of the Perished Chill of the Grave Cleaver Skaab Clutch of Undeath Coat of Arms Commence the Endgame Compelling Deterrence Corpse Cobble Corpse Harvester Corpseweft Cradle of the Accursed Crawl from the Cellar Crowded Crypt Cruel Revival Crush Dissent Cryptbreaker Cryptcaller Chariot Curse of Disturbance Curse of Shallow Graves Curse of the Restless Dead Cursecloth Wrappings Dark Salvation Daryl, Hunter of Walkers Deadapult Deadly Plot Death Baron Death Tyrant Deathknell Berserker Deathmark Prelate Deluge of the Dead Diregraf Captain Diregraf Colossus Diregraf Horde Doomed Dissenter Drana's Chosen Draugr's Helm

Give your cards that premium feeling
A lot of players definitely enjoy this kind of gameplay and the choices involved in these cards however, so I do expect to see them sticking throughout the history of the format ahead of us
You dont get the same arbitrage on rare cards that you used to as now people will typically know what cards cost before throwing them away, selling them in a garage sale or anywhere else
You can tap any untapped creature you control to convoke a spell, even one you haven't controlled continuously since the beginning of your most recent turn