you should be picking them because you really want to play a hardcore Guardian, or Survivor, or whatever
SM8b GX Ultra Shiny was very popular
Hamon, Lord of Striking Thunder and Uria, Lord of Searing Flames each receive cards that modify their Summoning requirements to make them easier to fulfill and help you mount a second or third strike if the first isnt enough
Bibarel comes with a meme-like following that stems from the love for Bidoof, so nothing will really replace the Sinnoh favourite
The KMC W sleeves were suggested by someone on the forum, but I cant remember who
A-Tier Longtusk Stalker: Energy 100% Faceless Agent: (basically any tribal-themed pack) Freyalise, Skyshroud Partisan: Freyalise 100% Blade Splicer: Many Faces 100% Restoration Angel: Flickering 100% Hardened Scales: Scaled Up 100% Master of the Pearl Trident: Merfolk 25% Svyelun of Sea and Sky: Merfolk 100% Nettlecyst: In the Machine 60% Thought Monitor: In the Machine 30% Priest of Fell Rites: Reanimated 100% Serra's Emissary: Serra's Realm 30% Sanctum Weaver: Enchanted 30% Sterling Grove: Enchanted 10% Sythis, Harvest's Hand: Enchanted 60% Thalia's Lieutenant: Humans 100% Yawgmoth, Thran Physician: Plague 100% As for the A-Tier cards, Enchantress is going to be the hardest deck to build since there is so much variance