your commander is gonna be 1-2 punching people, doubling your mana is gonna waste a turn, and you cant do alot with the mana other then empty your hand, and then you get boardwiped and your sent back to your childhood
Adaptive Shimmerer Akoum Alchemist's Refuge Ancient Stone Idol Baton of Courage Bear Trap Darksteel Sentinel Dire Mimic Disruptor Flute Drownyard Behemoth Elder Deep-Fiend Emergence Zone Galvanic Key Gerrard's Hourglass Pendant Goblin Firebomb Grifter's Blade Hidden Blade High-Speed Hoverbike Instant Ramen Instruments of War Leonin Bladetrap Liberator, Urza's Battlethopter Manhole Cover Mithril Coat Needlebug Progenitor's Icon Quick-Draw Dagger Runaway Boulder Scale of Chiss-Goria Shimmer Myr Silver Shroud Costume Skittering Cicada Smoke Bomb Spiked Pit Trap Springjaw Trap Supply Drop Tawnos Tooth of Chiss-Goria Vedalken Orrery Vibranium Strike Gauntlets Winding Canyons
If you think Ob Nixilis is going to end up being banned, itd be worth it to pick up a playset of Falco Spara now (while it is super cheap)
Additionally, while a fully cat-themed deck may not be super powerful, cards like Ocelot Pride and Cauldron Familiar show that some cats can be pretty strong
Yes, part of that is related to the search for the One of One Ring, but its also due to the popularity of this IP