Funnily enough, I had a quick look at the Cloudpost deck that made the Top 8 of the very first Modern Pro Tour in Philadelphia back in 2011, and the deck contained four cards that are now banned Cloudpost, Eye of Ugin, Green Suns Zenith and Punishing Fire
I expect that well never get an instant for 1B that just destroys any creature, but the more options that we get for restricted removal spells the closer we get to having approximately that card exist for any given Cube
1 Blessed Breath
What makes Narset so horrendous to deal with is that your opponent has very little recourse if they're not already set up to deal with her
If youre looking to upgrade Food and Fellowship, look no further
With other complementary artifact mana sources like Thran Dynamo and Grim Monolith, decks could count on being able to get the kind of mana you'd need to justify packing the cards that would let you use the mana from Metalworker to deliver the knockout blow, and their presence lets you turn that Metalworker mana into permanent giant amounts of mana rather than just a one shot deal
