Mana-Charged Dragon isnt a hyper-powerful card, but it actually captures the concept of teaming up with individual players instead of just helping the entire table equally
When prompted to select a creature type for a card like Obelisk of Urd , creature types present in your deck will appear on top, sorted from most to least frequent, followed by all other creature types

April O'Neil, Kunoichi Trainee Azra Smokeshaper Biting-Palm Ninja Blade-Blizzard Kitsune Casey & Raph, Hotheads Chrome Dome Coiling Stalker Covert Technician Dark Leo & Shredder Definitely Not a Turtle Dokuchi Shadow-Walker Dokuchi Silencer Don & Leo, Problem Solvers Don & Raph, Hard Science Donatello, Gadget Master Donatello, Mutant Mechanic Donatello, Rad Scientist Donatello, Turtle Techie Donatello, Way with Machines Donatello, the Brains Donnie & April, Adorkable Duo Elektra, Daughter of the Hand Fallen Shinobi Fang of Shigeki Foot Elite Foot Mystic Foot Ninjas Futurist Operative Heroes in a Half Shell Higure, the Still Wind Ingenious Infiltrator Ink-Eyes, Servant of Oni Inkrise Infiltrator Jennika, Bad Apple Big Sister Kappa Tech-Wrecker Karai, Future of the Foot Kotose, the Silent Spider Koya, Death from Above Krang & Shredder Leonardo, Big Brother Leonardo, Cutting Edge Leonardo, Leader in Blue Leonardo, Sewer Samurai Leonardo, Worldly Warrior Leonardo, the Balance Lita, Little Orphan Amphibian Masterful Ninja Mechanized Ninja Cavalry Michelangelo, Game Master Michelangelo, Improviser Michelangelo, Mutant BFF Michelangelo, On the Scene Michelangelo, Weirdness to 11 Michelangelo, the Heart Mikey & Don, Party Planners Mikey & Leo, Chaos & Order Mikey & Mona, Mutant Sitters Mist-Syndicate Naga Mistblade Shinobi Moon-Circuit Hacker Moonblade Shinobi Moonsnare Specialist Mukotai Ambusher Nashi, Moon Sage's Scion Nashi, Searcher in the Dark Nezumi Prowler Ninja Ninja of the Deep Hours Ninja of the Hand Ninja of the New Moon Okiba-Gang Shinobi Orochi Soul-Reaver

Of course, this is made easier by the fact that each deck contains a Sol Ring (#1 card in Commander) and a Commander's Sphere (#3 card in Commander), but Open Hostility gets both Skullclamp and Lightning Greaves, which rank in the top 20 cards in Commander
Its second ability is niche, especially in a meta of Solitudes and Fatal Pushes, but if the opponent has no damageless removal then this thing becomes extremely problematic, even if they have blockers
Timing restrictions based on the card's type are ignored.