Inti doesn't have any built-in resiliency to removal, but he does only cost 2 mana, which means you can reliably recast him a few times per game, which puts him roughly on par with the other resilient options in my opinion
Some cards have been printed in multiple sets, and older sets are generally worth more than newer printings
That also informs you that Neyali wants to go wide with tokens, not tall, since you just need to attack to get the cast trigger, and that's more reliable than your sole 5/5 Dragon token dying to a Murder before you attack
When this saga hits its final chapter, you potentially get a large mana boost to play said creatures
This blue creature finds a natural home in mill decks and works as a janky recursion spell, like a Rise from the Grave that works with creature synergies like Animar, Soul of Elements