These were the thorns from this set for me and in the grand scheme of things they are minor when compared to all of the set's upside
Unless an objects mana cost includes Phyrexian mana symbols (see rule 107.4f), paying that mana cost requires matching the color of any colored mana symbols as well as paying the generic mana indicated in the cost
You can see the full panel below, but well pick out some highlights
Perfectly suited for every stage of your collecting journey, ensuring every card has its own dedicated display space
Although it only works for one round, it can effectively prevent players who have a card in play that gives them a substantial amount of lore, or perhaps can even come in clutch at the end turns of a game

Advanced Search Sets Random Syntax Admonition Angel Adventuring Gear Akoum Firebird Akoum Hellhound Akoum Hellkite Akoum Stonewaker Ambrosia Whiteheart Belligerent Whiptail Bloodghast Canyon Jerboa Caustic Crawler Cosi's Ravager Dreadwurm Embodiment of Fury Emeria Angel Emeria Shepherd Eternity Vessel Fearless Fledgling Felidar Retreat Fledgling Griffin Geode Rager Geyser Glider Geyserfield Stalker Glyph Elemental Guul Draz Overseer Hagra Crocodile Hedron Rover Hedron Scrabbler Iridescent Vinelasher Makindi Ox Makindi Sliderunner Moraug, Fury of Akoum Nesting Dragon Ob Nixilis, the Fallen Ondu Greathorn Plated Geopede Prowling Felidar Quest for the Necropolis Rabaroo Troop Reckless Pyrosurfer Remnant Elemental Rest for the Weary Retreat to Emeria Retreat to Hagra Retreat to Valakut Sabotender Scrib Nibblers Searing Blaze Seer's Sundial Skyclave Geopede Skyclave Shade Soul Stair Expedition Spitfire Lagac Steppe Lynx Sunspring Expedition Sunstar Expansionist Surrakar Marauder TL;DR (playtest) Territorial Bruntar Toggo, Goblin Weaponsmith Tomb Hex Trove Warden Tunneling Geopede Valakut Exploration Valakut Predator Weather Maker Werewolf Mage Lightning Zektar Shrine Expedition
