Most melded permanents are creatures and follow the exact same rules as any other, meaning you can protect them by giving them ward, hexproof, indestructible, or older mechanics like shroud
Consult the Star Charts I frequently end up with 10+ lands in play
Wizards definitely knows their audience because all but one of the previewed anime cards feature a young-ish, doe-eyed woman in gorgeous clothing against fantastical settings (and one goose hydra)
Once Claire DLoon, Joy Sculptor enters the battlefield, for the rest of the game, all tokens you make are permanent cards, meaning if they were to leave the battlefield for any reason, they continue to remain real cards instead of disappearing
Granting Haste is a nice touch, but Firion, once again, requires a lot of resources for this particular line of text to generate value