Yes, it will give you nine power worth of Golems for only five mana, which is a deal you're not likely to find just about anywhere
As of April 2025, the letters G, H, and I are legal in the Standard format
In modern times, people changed the ugo(ku) (move) part of the phrase into hatara(ku) (work), into the phrase Hatarakazaru koto Yama no Gotoshi, meaning Not working like a mountain, to refer to NEETs
This is incredibly powerful because it can essentially prevent your opponent from activating any card for free

Operation Strix [The Second Doctor/Donna Noble] Commander / EDH Bracket 3 Control Multiplayer Pillow Fort Redirection RUW (Jeskai, America) Land (35) 1x Academy Ruins 1x Arid Mesa 1x Azorius Chancery 1x Command Tower 1x Elegant Parlor 1x Exotic Orchard 1x Flooded Strand 1x Floodfarm Verge 1x Hallowed Fountain 4x Island 1x Kor Haven 1x Maze of Ith 1x Meticulous Archive 1x Mistveil Plains 3x Mountain 6x Plains 1x Prismatic Vista 1x Sacred Foundry 1x Scalding Tarn 1x Scavenger Grounds 1x Sea of Clouds 1x Spectator Seating 1x Strip Mine 1x Sunbillow Verge 1x Trenzalore Clocktower Enchantment (10) 1x Crescendo of War 1x Curse of Opulence 1x Duelist's Heritage 1x Ghostly Prison 1x Monologue Tax 1x Pain for All 1x Propaganda 1x Struggle for Project Purity 1x Trouble in Pairs Sorcery (2) Instant (25) 1x Arcbond 1x Boros Charm 1x Boros Fury-Shield 1x Comeuppance 1x Deflecting Palm 1x Deflecting Swat 1x Dovin's Veto 1x Everybody Lives