Vaultborn Tyrant might cause more trouble in other formats, like Commander, especially since its a Dinosaur
For example, your Birgi, God of Storytelling deck could look to Wiccan, Young Avenger to be slightly less busted
Only three of the Godzilla cards are eligible commanders, but thats a conversation to have with your playgroup if youd rather run Godzilla, Primeval Champion over Godzilla, King of Monsters
I love it in ramp to win the game and make your other big stuff trample, madness, discard matters, Golgari self-mill, Jund's Lord Windgrace lands return to the battlefield from the graveyard, Sultai's self-milling Sidisi, Brood Tyrant, blink, midrange, tokens, and loads more
Its a battlecruiser that doesnt do anything besides exist as a big, stronk demon
Clever Concealment has convoke so can come out for free if the board is developed