The ratign is more a product of there being so many great five drops in addition to there also being other better Garruks on offer
Blacks are deep enough to anchor the frame without swallowing details
There are no chat channels of any kind in the game, no trading, really no reason or way for people to communicate through the platform (aka community isolation)

Abstract Iguanart Adaptive Snapjaw Aetherwind Basker Agate Instigator Agate-Blade Assassin Alpha Deathclaw Ashroot Animist Basking Broodscale Basking Rootwalla Bellows Lizard Blazing Rootwalla Bloodscale Prowler Bloodspore Thrinax Bounding Krasis Brooding Saurian Burning-Tree Bloodscale Canal Monitor Carrion Thrash Chandra's Pyreling Cindering Cutthroat Clandestine Chameleon Common Iguana Cornered Crook Crag Saurian Crimson Muckwader Dagger Caster Deathgazer Drakewing Krasis Experiment Twelve Fireglass Mentor Flamecache Gecko Flycatcher Giraffid Frilled Mystic Frilled Sandwalla Frilled Sparkshooter Frostwalla Galloping Lizrog Garrison Sergeant Gastal Thrillseeker Gev, Scaled Scorch Ghor-Clan Bloodscale Gila Courser Gilacorn Glidedive Duo Gloryscale Viashino Golgari Brownscale Graywater's Fixer Grotag Thrasher Hall Monitor Hearthborn Battler Hellspur Posse Boss Hired Claw Hissing Iguanar Hivis of the Scale Horned Stoneseeker Iguana Parrot Immolation Shaman Infested Thrinax Inspired Skypainter Iridescent Vinelasher Jund Sojourners Karsus Depthguard Kediss, Emberclaw Familiar Kindlespark Duo King of the Coldblood Curse Komodo Rhino Korozda Monitor Kylox, Visionary Inventor Lagac Lizard Lathnu Sailback Laughing Jasper Flint Lava Runner

Pokmon cards represent creatures used in battle and come in different elemental types (like Fire, Water, or Electric)
Reds access to ramp is sparse at worst and conditional at best, so the Prospectors relatively stipulation-free activation means its the superior choice for ramp in any goblins deck