Theres a few cats with removal as part of their enters abilities, and you can use cards like Elesh Norn, Mother of Machines to double those triggers
I have a saved search for Star City Games auctions and I see them list interesting things weekly
It offers a solid incentive to build five very different mono-color decks
Adun Oakenshield Auntie Ool, Cursewretch Bartel Runeaxe Bhaal, Lord of Murder Broodmate Dragon Broodmate Tyrant Carrion Thrash Charnelhoard Wurm Coram, the Undertaker Crew Captain Darigaaz Reincarnated Darigaaz's Charm Darigaaz, the Igniter Destructive Flow Disa the Restless Dragon Appeasement Earthlink Effluence Devourer Giant Ambush Beetle Gluttonous Hellkite Gyrus, Waker of Corpses Hearthhull, the Worldseed Hellkite Overlord Henzie "Toolbox" Torre Indoraptor, the Perfect Hybrid Jund 'Em Out (playtest) Jund Charm Jund Hackblade Jund Sojourners Karrthus, Tyrant of Jund Korvold, Fae-Cursed King Korvold, Gleeful Glutton Kresh the Bloodbraided Lavalanche Lord Windgrace Madrush Cyclops Masked Bandits Misfortune Mr
However, if players wish to complete a collection of a specific set, or build a functioning deck, they will need a solid range of cards to do so
