The floor here is a 5-mana 4/4 Fractal, and the ceiling is quite a bit higher because you can put the counter somewhere else and you can do it every single turn
This is the way you can tell them apart if you are looking at the packaging
These are very powerful cards that let you basically generate mana for free
Example Lists Mono Green Creature Based 24 Spells Llanowar Elves Fyndhorn Elves Elvish Mystic Joraga Treespeaker Noble Hierarch Skullclamp Rofellos, Llanowar Emissary Lotus Cobra Devoted Druid Explore Sylvan Advocate Satyr Wayfinder Tireless Tracker Rishkar, Peema Renegade Yavimaya Dryad Oracle of Mul Daya Garruk Wildspeaker Nissa, Worldwaker Verdurous Gearhulk Primeval Titan Walking Ballista Hornet Queen Crafterhoof Behemoth Decimator of Provinces 16 Lands Gaea's Cradle Treetop Village Rishadan Port 13 Forests Gr Ramp 23 Spells Search for Tomorrow Birds of Paradise Oath of Nissa Joraga Tree Speaker Arbor Elf Explore Sakura Tribe Elder Nature's Lore Sylvan Library Sylvan Caryatid Yavimaya Dryad Nissa, the Vastwood Seer Courser of Kruphix Den Protector Oracle of Mul Daya Polukranos, World Eater Garruk Relentless Nissa, Vital Force Primeval Titan Dragonlord Atarka Avenger of Zendikar Ugin, the Spirit Dragon 17 Lands Nykthos, Shrine to Nyx Myriad Landscape Kessig Wolf Run Tiaga Wooded Foothills Stomping Ground Raging Ravine Temple of Abandon 9 Forests These are just two fairly standard example lists
This allows you to make hilarious plays such as casting an opponent's removal on their own creatures or using their combat step in the worst way possible
What happens when they square up for battle
