Starting February 9, McDonald's Happy Meals will include a 25th Anniversary Special Edition McDonald's booster pack of Pokmon Trading Card Game cards
However a few do have "practical" uses - here are some examples: The particular card you reference, Garruk the Slayer, was created for the Magic 2015 prerelease and is used in a variant where one player plays normally and the other plays as Garruk
Advanced Search Sets Random Syntax Allied Strategies Artillery Blast Aven Trailblazer Bortuk Bonerattle Briar Hydra Collapsing Borders Collective Restraint Draco Drag Down Drag to the Bottom Evasive Action Exotic Curse Exotic Disease Exploding Borders Gaea's Might Herd Migration Jodah's Codex Kavu Scout Leyline Binding Llanowar Greenwidow Magnigoth Treefolk Manaforce Mace Matca Rioters Meria's Outrider Might of Alara Nael, Avizoa Aeronaut Nishoba Brawler Ordered Migration Planar Despair Power Armor Prismatic Geoscope Radha's Firebrand Radha, Coalition Warlord Samite Pilgrim Scion of Draco Shadow Prophecy Slimefoot's Survey Sphinx of Clear Skies Spore Burst Stratadon Strength of Unity Sunbathing Rootwalla Territorial Kavu Territorial Maro The Weatherseed Treaty Tribal Flames Tromp the Domains Voda Sea Scavenger Voices from the Void Wandering Goblins Wandering Stream Wayfaring Giant Worldly Counsel Yavimaya Sojourner Zar Ojanen, Scion of Efrava
You then spend all four of your land drops playing and tapping the Simic Growth Chamber and then returning it to your hand, with the end result being that Summer Bloom is a ritual that costs two mana and adds six mana to your mana pool (exactly enough to play a Primeval Titan, which is where things get even sillier, since the lands you tutor up with Primeval Titan untap as well, and you pretty much just win the game on the spot, sometimes on Turn 2)
