Specifically against Affinity, a deck which has recently been seeing more play and has even managed to top 8 the last Modern Challenge, destroying two artifacts very early can prevent them from even playing their Thought Monitor, Thoughtcast, Sojourners Companions and other cards since they will lack the necessary amount of Artifacts to enable Affinity
Chaos Incarnate (Black-Red) Aggression and madness
The difference is that the highest Mega Evolution rarities are harder to pull while the lower rarities are easier to pull
As with all non-rotating formats, new cards get added to this format with every new release, and sets never rotate out of the format either
[/spoiler] [spoiler= Special Schedule] Target 1 Machine-Type monster with 3000 or more ATK in your Graveyard
In an ideal design, I think the keyword would be bold against a normal font, and the mechanics would also separated from flavour text