You can pick it up and play for free against anonymous online opponents, and as long as you have the required tactical mind, patience, and high frustration threshold to enjoy Magic , this is likely a cheap method of entry
Abzan Greasefang 4 Raffine's Informant 4 Greasefang, Okiba Boss 4 Thoughtseize 4 Esika's Chariot 4 Parhelion II 3 Darkbore Pathway 3 Grisly Salvage 3 Concealed Courtyard 3 Temple Garden 3 Bitter Triumph 2 Razorverge Thicket 2 Duress 2 Cache Grab 2 Skysovereign, Consul Flagship 2 Blooming Marsh 2 Godless Shrine 2 Witherbloom Command 1 Sentinel of the Nameless City 1 Can't Stay Away 1 Boseiju, Who Endures 1 Mana Confluence 1 Overgrown Tomb 1 Swamp 1 Takenuma, Abandoned Mire 1 Brushland 1 Sheoldred, the Apocalypse 1 Plains 1 Traverse the Ulvenwald 4 Fatal Push 3 Temporary Lockdown 2 Liliana of the Veil 2 Unlicensed Hearse 2 Kutzil's Flanker 1 Reckoner Bankbuster 1 Duress Abzan Greasefang has also returned to its former glory after the bans

Then you can discard two cards at the beginning of your first main phase to return this to your hand from your graveyard, which is card disadvantage naturally but with madness, lands, discard triggers like Archfiend of Ifnir, and loads more, it's got value
So, while demand for Summon: Knights of Round are higher than weve seen it, supply could be matching it
Due to the low CMC, this is an excellent card, as any higher would have made it near unplayable
Just be