You benefit from opponents spending their creatures to fight Grothama and can use pump spells to control whether or not it dies and disperses cards to everyone
If youve ever played against an artifact deck you know the struggle when Darksteel things hit the field
Like most Magic: The Gathering cards, the value of Mountain depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Battle for Zendikar)
A three-cost card, Mama Odie, Mystical Maven is a good card primarily because of its cheap cost and ability: This Going to be Good
Red is good at destroying artifacts but is pretty weak at destroying enchantments, so adding Liquimetal Torque to your deck lets you turn your artifact destruction into enchantment destruction
In Commander, its very easy to abuse this card and while there is a Post Malone SL version as well as a white border from MYB2, this is already the chase version at $50