However, the second attack is where things get really interesting but also, almost certainly self-destructive too
$25 Upgrade +1/+1 Counters is a very deep archetype so there's more sweet upgrade options that I could ever hope to cover, but I selected some of my favorites: for protection I've added Bulwark Ox and Mutational Advantage, a bunch of proliferates with Metastatic Evangel and Dreamtide Whale being the two best, ramp got a massive upgrade with Astral Cornucopia / Kami of Whispered Hopes / Purestrain Genestealer / Summon: Fenrir, and so on
So far, three Mega Evolution expansions have been released, with Ascended Heroes (January 30th), Perfect Order (March 27th), and the newest set, Chaos Rising (May 22)
Naturally, many of the Necron cards interact with artifacts in one form or another
Even if one is countered, though, you'll still have another copy ready to go for your next turn, again, provided that the initial copy resolved successfully