1 Gaea's Blessing
The pockets keep your cards snug and prevent them from sliding around or getting scratches
However, the powers that be decided they don't want a creature type that had rules text associated with it (Wall and Legend were creature types with rules related to them, but no other creature type like elf or goblin had any rules) so they decided to remove the rules from all walls and give them the ability defender
, , Reveal a My Little Pony toy you own: Until end of turn, another target creature gains protection from each color in that toy's coat, mane, and outfit
My verdict: The Ruby & Amethyst Shimmering Skies Deck is ideal for players who want to outwit opponents with combos while keeping constant pressure on the board
There's a few other very good proliferate engines, such as Contagion Engine, Thrummingbird, and Guildpact Informant for repeatable proliferate, and Tezzeret's Gambit, Vivisurgeon's Insight, Contentious Plan, and Steady Progress adding proliferate to card draw which is great to have