Abrupt Decay Active Volcano Aegis Angel Ajani Vengeant Alpha Deathclaw Angel of Despair Angelic Rocket Argentum Armor Argentum Masticore Ass Whuppin' Assassin's Trophy Atomize Avalanche Riders Awaken the Honored Dead Awaken the Maelstrom Ayli, Eternal Pilgrim Bahamut, Warden of Light Bane of Progress Beast Within Behemoth of Vault 0 Binding the Old Gods Black Bolt, Inhuman King Bladegriff Prototype Blast Zone Blue Elemental Blast Bone Shredder Bounty Agent Bramblecrush Break the Spell Brink of Disaster Bronze Tablet Bumbleflower's Sharepot Capricious Efreet Captain's Hook Cavalier of Dawn Chain of Acid Chaos Confetti Chaos Defiler Cityscape Leveler Clay Golem Cloudchaser Kestrel Combustion Man Commander Sofia Daguerre Corrosion Cramped Bunker Crosis's Charm Culling Ritual Culling Scales Dark Temper Deadeye Harpooner Death Begets Life Decommission Deep-Fried Plague Myr Defiant Vanguard Desert Twister Despotic Scepter Destructor Dragon Detention Vortex Display of Dominance Drag to the Roots Druid of Purification Emerald Charm Emergency Eject Engineered Explosives Excavation Technique Extinguisher Battleship Eye of Doom Eye of Singularity Fatal Push Fate of the Sun-Cryst

The mono-blue removal package doesnt get rid of things a lot of the time, typically transforming them into a less potent threat, but it is often good enough in a multiplayer game
I think my main gripe with backgrounds is the lack of creativity on a lot of them
Theres also Ajani, Adversary of Tyrants which works well with the mentor creatures in Boros, as well as the next card on the list, and its hard to justify fitting four copies of a four mana legendary creature in the maindeck
instead players will earn a point when they knock out a Pokmon