Changing the rules of engagement like this is critical for control decks to flourish, as they plan to win by answering all the things the opponent is doing

Advanced Search Sets Random Syntax Release date: 2013-07-19 Ajani, Caller of the Pride Ajani's Chosen Angelic Accord Angelic Wall Archangel of Thune Auramancer Banisher Priest Blessing Bonescythe Sliver Brave the Elements Capashen Knight Celestial Flare Charging Griffin Congregate Dawnstrike Paladin Devout Invocation Divine Favor Fiendslayer Paladin Fortify Griffin Sentinel Hive Stirrings Imposing Sovereign Indestructibility Master of Diversion Pacifism Path of Bravery Pay No Heed Pillarfield Ox Planar Cleansing Sentinel Sliver Seraph of the Sword Serra Angel Show of Valor Siege Mastodon Silence Solemn Offering Soulmender Steelform Sliver Stonehorn Chanter Suntail Hawk Wall of Swords Air Servant Archaeomancer Armored Cancrix Cancel Claustrophobia Clone Colossal Whale Coral Merfolk Dismiss into Dream Disperse Divination Domestication Elite Arcanist Essence Scatter Frost Breath Galerider Sliver Glimpse the Future Illusionary Armor Jace, Memory Adept Jace's Mindseeker Merfolk Spy Messenger Drake Negate Nephalia Seakite Opportunity Phantom Warrior Quicken Scroll Thief Seacoast Drake Sensory Deprivation Spell Blast

Where most likely there will be another reprint of one or more of the older sets
Its just the marquee mechanic, which I think was developed with good intentions, that didnt pay off
As a baseline, we'd recommend including 10 to 20 Pokmon, 8 to 15 Energy cards, and as many Trainers as you can with the cards left over
Its reasonable to assume that they printed less of the lands, since lands are usually the worst-selling part of a Lair