Gamechangers for the Necrobloom Kenrith, The Returned King Five-color commanders are some of the strongest because they allow you to use any card in the game
One of the best ways to ensure that your deck is ready for anything is by including tutor cards
Celebrity Fencer can quickly become a target for removal, and if the opponent can't answer, it will be able to close out games on its own

Orfeo, the Boulder Nimble Larcenist Ob Nixilis, the Adversary Obscura Ascendancy Obscura Charm Obscura Interceptor Ognis, the Dragon's Lash Park Heights Pegasus Queza, Augur of Agonies Raffine, Scheming Seer Rakish Revelers Rigo, Streetwise Mentor Riveteers Ascendancy Riveteers Charm Rocco, Cabaretti Caterer Scheming Fence Security Rhox Shattered Seraph Snooping Newsie Soul of Emancipation Spara's Adjudicators Stimulus Package Syndicate Infiltrator Tainted Indulgence Toluz, Clever Conductor Unleash the Inferno Void Rend Ziatora, the Incinerator Ziatora's Envoy ARTIFACT Arc Spitter Brass Knuckles Cement Shoes Chrome Cat Getaway Car Gilded Pinions Halo Scarab Luxior, Giada's Gift Ominous Parcel Paragon of Modernity Quick-Draw Dagger Scuttling Butler Suspicious Bookcase Unlicensed Hearse LAND Botanical Plaza Brokers Hideout Cabaretti Courtyard Jetmir's Garden Maestros Theater Obscura Storefront Racers' Ring Raffine's Tower Riveteers Overlook Skybridge Towers Spara's Headquarters Tramway Station Waterfront District Xander's Lounge Ziatora's Proving Ground Plains Plains Island Island Swamp Swamp Mountain Mountain Forest Forest WHITE | BLUE | BLACK | RED | GREEN MULTICOLORED | ARTIFACT | LAND | ALL CARDS

Richard's halo is the color pie, in proper WUBRG order
Not only does Nullhide Ferox fit perfectly into Mono-Green Aggro immediately, but I wouldnt be surprised if its a big part of Standard after the next set when Gruul becomes a part of the format