I would rather keep brain space and game changer space free for other legendary creatures perhaps on their own separate Commander-specific Game Changer list but all in all this guy just makes a ton of mana and gives you a restrictive outlet for you hes not even the most offensive mana-related Commander on the Gamechanger list
People held it very close to themselves and were reluctant to trade it
If your tenth permanent enters the battlefield and then a permanent leaves the battlefield immediately afterwards (most likely due to the "legend rule" or due to being a creature with 0 toughness), you get the city's blessing before it leaves the battlefield

$2.49 Rikku, Resourceful Guardian (Surge Foil) Final Fantasy Commander Decks $0.79 Summon: Shiva (0362 - Borderless) Final Fantasy Variants $2.99 Alphinaud Leveilleur (Surge Foil) Final Fantasy Commander Decks $0.99 Yuna, Grand Summoner Final Fantasy Commander Decks $1.99 Protection Magic (Surge Foil) Final Fantasy Commander Decks $1.99 Auron, Venerated Guardian (Surge Foil) Final Fantasy Commander Decks $0.79 O'aka, Traveling Merchant (Surge Foil) Final Fantasy Commander Decks $0.49 Thancred Waters (Surge Foil) Final Fantasy Commander Decks $0.79 Summon: Valefor (Surge Foil) Final Fantasy Commander Decks $0.99 Observed Stasis (Surge Foil) Final Fantasy Commander Decks $4.99 Cid, Freeflier Pilot (Surge Foil) Final Fantasy Commander Decks $4.99 Ultimate Magic: Holy (Surge Foil) Final Fantasy Commander Decks 0 results found
If the most popular deck is a fast, aggressive creature strategy, you know that your deck needs a plan to survive the early game