Just be sure to declare this once you add a spell to the stack to avoid a play being rolled back because your opponents werent aware of the strength of a spell

5-Color Kenrith Good Stuff Kenrith, the Returned King | Illustration by Kieran Yanner Commander (1) Creature (32) Arixmethes, Slumbering Isle Atraxa, Praetors' Voice Baleful Strix Biomancer's Familiar Birds of Paradise Bloom Tender Doom Whisperer Dragonmaster Outcast Elder Gargaroth Faeburrow Elder Fleshbag Marauder General's Enforcer Haktos the Unscarred Kami of False Hope Kelsien, the Plague Kiora's Follower Linvala, Shield of Sea Gate Managorger Hydra Marchesa, the Black Rose Noble Hierarch Notion Thief Plaguecrafter Resplendent Angel Saskia the Unyielding Seedborn Muse Shalai, Voice of Plenty Spore Frog Thrasios, Triton Hero Walking Ballista Willbreaker Zacama, Primal Calamity Zirda, the Dawnwaker Instant (11) Assassin's Trophy Beast Within Counterspell Disenchant Generous Gift Hindering Light Negate Pongify Swords to Plowshares Teferi's Protection Windgrace's Judgment Sorcery (7) End Hostilities Farseek Mythos of Illuna Read the Bones Regrowth Vindicate Wrath of God Enchantment (7) Colossal Majesty Dismiss into Dream Mana Reflection Rhystic Study Training Grounds Treachery Wilderness Reclamation Artifact (7) Arcane Signet Chromatic Lantern Crucible of Worlds Fellwar Stone Scroll Rack Sculpting Steel Sol Ring Land (35) Arid Mesa Badlands Bayou Bloodstained Mire City of Brass Command Tower Flooded Strand Forest x2 Island x2 Mana Confluence Marsh Flats Misty Rainforest Mountain x2 Plains x2 Plateau Polluted Delta Savannah Scalding Tarn Scrubland Strip Mine Swamp x2 Taiga The World Tree Tropical Island Tundra Underground Sea Verdant Catacombs Volcanic Island Windswept Heath Wooded Foothills This is exactly what the title says

Transmogrant their best creature so you can steal it with Steal Artifact, as it turns into an artifact
Choco, Seeker of Paradise seeks to change that, adding new and powerful green birds from the FF set
Ardoz, Cobbler of War Do you get tired of boards building up and not interacting much