In isolation I rate this as the best of this Charm cycle but sadly it is in Selesnya which is a less popular and diverse colour pairing than most others which brings this more in line with the other good ones
In fact, many of the best stuff running around is oriented toward the big side (Stoneforge Mystic, Restoration Angel, Teferi, Mage of Zhalfir, Consecrated Sphinx, Vampire Nighthawk, Gray Merchant of Asphodel, Feldon of the Third Path, Azusa, Lost of Seeking, Silklash Spider, Courser of Kruphix, Prophet of Kruphix, Brago, King Eternal, Kuldotha Forgemaster), and thats in addition to creatures specifically designed and included for defense like Walls and other cards with defender
The only bad thing is that the Believe half costs 5 mana
It's a card that mono-blue decks cringe at, and a pointed answer to a metagame full of control players
All the Unsanctioned cards had to exist in monocolor half-decks, so that meant I'd have to make a monocolor legendary creature that had a five-color color identity
Make your biggest creature even bigger