It gains protection from everything until your next turn
You can drop a land tapped (any land), tutor a dork, exile like a better Naturalize artifacts or enchantments to perma-answer stuff or grow with a counter and pseudo-fight as removal too
Riders of the Mark is a powerful swing, and it reminds me of Thopter Assembly, sort of

Nymris Flash Nymris, Oona's Trickster | Illustration by Johannes Voss Commander (1) Creatures (19) Academy Loremaster Cunning Nightbonder Quickling Activated Sleeper Naiad of Hidden Coves Nimble Obstructionist Slitherwisp Wavebreak Hippocamp Mocking Doppelganger Notion Thief Stunt Double Venser, Shaper Savant Necron Deathmark Teferi, Mage of Zhalfir Evil Twin Lochmere Serpent Sakashima's Protege Torrential Gearhulk Hullbreaker Horror Instants (29) Black Sun's Twilight Consider Dispel March of Swirling Mist March of Wretched Sorrow Opt Slip Out the Back Counterspell Countersquall Delay Drown in the Loch Go for the Throat Impulse Infernal Grasp Siphon Insight Snap Force of Despair Frantic Search Silundi Vision Unwind Aetherize Annul Hagra Mauling Hostile Negotiations Memory Plunder Mystical Teachings Mystic Confluence Sublime Epiphany Dig Through Time Sorceries (3) Blue Sun's Twilight Feed the Swarm Deem Inferior Enchantments (4) Omen of the Dead Alexi's Cloak Dress Down Omen of the Sea Artifacts (8) Sol Ring Arcane Signet Coldsteel Heart Dimir Signet Fellwar Stone Mind Stone Talisman of Dominance Worn Powerstone Lands (36) Ash Barrens Barren Moor Castle Locthwain Castle Vantress Choked Estuary Command Tower Creeping Tar Pit Darkslick Shores Demolition Field Dimir Aqueduct Dismal Backwater Evolving Wilds Fetid Pools Island x11 Maestros Theater River of Tears Sunken Hollow Swamp x6 Tainted Isle Temple of Deceit Underground River Nymris, Oona's Trickster leads the main control deck on this list

If you only want the hand sizes to go one way, you can still make it work despite what I said at the top of the article