Six mana for double strike is already on the expensive end, as we've seen
Check out Mark's article today to hear more about that process
For instance, in an Archimandrite deck you could gain a bunch of life in your upkeep and first main phase to add a big +X/+0 buff to your commander, then use Alteration to turn it into Giggling Skitterspike
One to get really excited about is Exploration Broodship, a card that allows us not only to play extra lands, but also eventually cast permanents from our yard once were stationed-up
Do you feel confident enough to perform this test by yourself, or would you like to know if there's an easier way to identify a counterfeit
Assuming this is a sign-post uncommon for the set, it appears Izzet will be leaning into its usual spellcasting ways, though perhaps with an expensive spells matter theme of sorts