The Mega Evolution era still ships SAR cards but the apex chase tier shifts to MUR (Mega Ultra Rare)
If we go overboard adding cute stuff that isn't mission-critical we'll have less room for removal
Designer Notes: Swarm the battlefield with elves and let your commander turn that army into unstoppable value
Store your jewelry, crafts, tea, medicine, crucial office desk accessories, photos, or cosmetics
A cycle of common cards has basic land typecycling
Some folks have argued that its a little too much like Upheaval in that the caster gets to float mana and do additional things (especially since the lands enter the battlefield untapped), but that analogy breaks down because the opponents also get to float mana and have untapped lands