Fortunately, Wizards of the Coast has been messing around with lighter versions of subgames - Enter the Dungeon forces you to play a subgame under the table
WHITE | BLUE | BLACK | RED | GREEN MULTICOLORED | ALL CARDS WHITE Anafenza, Kin-Tree Spirit Daxos, Blessed by the Sun Elesh Norn, Grand Cenobite Kenrith, the Returned King Kwende, Pride of Femeref Sram, Senior Edificer Thalia, Guardian of Thraben Anafenza, Kin-Tree Spirit Daxos, Blessed by the Sun Elesh Norn, Grand Cenobite Kenrith, the Returned King Kwende, Pride of Femeref Sram, Senior Edificer Thalia, Guardian of Thraben Anafenza, Kin-Tree Spirit Daxos, Blessed by the Sun Elesh Norn, Grand Cenobite Kenrith, the Returned King Kwende, Pride of Femeref Sram, Senior Edificer Thalia, Guardian of Thraben BLUE Baral, Chief of Compliance Emry, Lurker of the Loch Inga Rune-Eyes Jin-Gitaxias, Core Augur Tetsuko Umezawa, Fugitive Baral, Chief of Compliance Emry, Lurker of the Loch Inga Rune-Eyes Jin-Gitaxias, Core Augur Tetsuko Umezawa, Fugitive Baral, Chief of Compliance Emry, Lurker of the Loch Inga Rune-Eyes Jin-Gitaxias, Core Augur Tetsuko Umezawa, Fugitive BLACK Ayara, First of Locthwain Horobi, Death's Wail Seizan, Perverter of Truth Sheoldred, Whispering One Skithiryx, the Blight Dragon Tymaret, Chosen from Death Yargle, Glutton of Urborg Ayara, First of Locthwain Horobi, Death's Wail Seizan, Perverter of Truth Sheoldred, Whispering One Skithiryx, the Blight Dragon Tymaret, Chosen from Death Yargle, Glutton of Urborg Ayara, First of Locthwain Horobi, Death's Wail Seizan, Perverter of Truth Sheoldred, Whispering One Skithiryx, the Blight Dragon Tymaret, Chosen from Death Yargle, Glutton of Urborg RED Captain Lannery Storm Ragavan, Nimble Pilferer Squee, the Immortal Urabrask the Hidden Valduk, Keeper of the Flame Zada, Hedron Grinder Captain Lannery Storm Ragavan, Nimble Pilferer Squee, the Immortal Urabrask the Hidden Valduk, Keeper of the Flame Zada, Hedron Grinder Captain Lannery Storm Ragavan, Nimble Pilferer Squee, the Immortal Urabrask the Hidden Valduk, Keeper of the Flame Zada, Hedron Grinder GREEN Fynn, the Fangbearer Goreclaw, Terror of Qal Sisma Renata, Called to the Hunt Vorinclex, Voice of Hunger Yedora, Grave Gardener Fynn, the Fangbearer Goreclaw, Terror of Qal Sisma Renata, Called to the Hunt Vorinclex, Voice of Hunger Yedora, Grave Gardener Fynn, the Fangbearer Goreclaw, Terror of Qal Sisma Renata, Called to the Hunt Vorinclex, Voice of Hunger Yedora, Grave Gardener MULTICOLORED Aegar, the Freezing Flame Arixmethes, Slumbering Isle Atraxa, Praetors' Voice Atris, Oracle of Half-Truths Aurelia, the Warleader Brudiclad, Telchor Engineer Dina, Soul Steeper Ezuri, Claw of Progress Firesong and Sunspeaker Firja, Judge of Valor Grimgrin, Corpse-Born Gyruda, Doom of Depths Imoti, Celebrant of Bounty Jegantha, the Wellspring Judith, the Scourge Diva Juri, Master of the Revue Kaheera, the Orphanguard Keruga, the Macrosage Kroxa, Titan of Death's Hunger Lathiel, the Bounteous Dawn Lurrus of the Dream-Den Lutri, the Spellchaser Niv-Mizzet Reborn Obosh, the Preypiercer Radha, Coalition Warlord Raff, Weatherlight Stalwart Reyav, Master Smith Rona, Sheoldred's Faithful Shanna, Sisay's Legacy Taigam, Ojutai Master Teysa Karlov Umori, the Collector Yarok, the Desecrated Yorion, Sky Nomad Zirda, the Dawnwaker Aegar, the Freezing Flame Arixmethes, Slumbering Isle Atraxa, Praetors' Voice Atris, Oracle of Half-Truths Aurelia, the Warleader Brudiclad, Telchor Engineer Dina, Soul Steeper Ezuri, Claw of Progress Firesong and Sunspeaker Firja, Judge of Valor Grimgrin, Corpse-Born Gyruda, Doom of Depths Imoti, Celebrant of Bounty Jegantha, the Wellspring Judith, the Scourge Diva Juri, Master of the Revue Kaheera, the Orphanguard Keruga, the Macrosage Kroxa, Titan of Death's Hunger Lathiel, the Bounteous Dawn Lurrus of the Dream-Den Lutri, the Spellchaser Niv-Mizzet Reborn Obosh, the Preypiercer Radha, Coalition Warlord Raff, Weatherlight Stalwart Reyav, Master Smith Rona, Sheoldred's Faithful Shanna, Sisay's Legacy Taigam, Ojutai Master Teysa Karlov Umori, the Collector Yarok, the Desecrated Yorion, Sky Nomad Zirda, the Dawnwaker Aegar, the Freezing Flame Arixmethes, Slumbering Isle Atraxa, Praetors' Voice Atris, Oracle of Half-Truths Aurelia, the Warleader Brudiclad, Telchor Engineer Dina, Soul Steeper Ezuri, Claw of Progress Firesong and Sunspeaker Firja, Judge of Valor Grimgrin, Corpse-Born Gyruda, Doom of Depths Imoti, Celebrant of Bounty Jegantha, the Wellspring Judith, the Scourge Diva Juri, Master of the Revue Kaheera, the Orphanguard Keruga, the Macrosage Kroxa, Titan of Death's Hunger Lathiel, the Bounteous Dawn Lurrus of the Dream-Den Lutri, the Spellchaser Niv-Mizzet Reborn Obosh, the Preypiercer Radha, Coalition Warlord Raff, Weatherlight Stalwart Reyav, Master Smith Rona, Sheoldred's Faithful Shanna, Sisay's Legacy Taigam, Ojutai Master Teysa Karlov Umori, the Collector Yarok, the Desecrated Yorion, Sky Nomad Zirda, the Dawnwaker
Imposter Mech is a great one for two mana, but if you want an interesting mana rock to try, you can look into Machine Gods Effigy
Other ways to use the big mana value of split cards include Starfield of Nyx, Zur, Eternal Schemer, and Metallurgic Summonings
Fury Fury is probably the weakest of the Incarnation cycle for Commander, but even so it's hardly a bad card
Moonlit Scavengers's ability doesn't return multiple creatures if you control multiple artifacts and/or enchantments
