mtg card effects March of the Machine: The Aftermath Release Notes MTG Card Effects Guide :

If Festival of Embers is destroyed by a spell, Festivals of Embers will be exiled and then the spell will be put into its owner's graveyard

While these are pretty attractive in the starter decks, I would definitely look to replace them once you upgrade your own deck, and Nani is a great option if you like the powerhouse bodyguard route

Yes, even I enjoy playing blue

they're mostly enchantments and cost-reducers, yet not many actual instants and sorceries

III Create three tapped 1/1 white Spirit creature tokens with flying

I think the infamy of the first in this series is pumping up the price somewhat, but this is certainly not a bad card, if not quite what the predecessor was