If you target an uncounterable spell like Abrupt Decay with a Counterspell, the counter simply fizzles and does nothing, similar to when you target an indestructible permanent with something that says destroy. You technically can do it, but it has no effect other than ticking up your storm count
And Sterling Grove is a great, but forgotten, card that plays into a pro-enchantment place but has never been reprinted so it's not available in many a home, such as Commander decks or other places that would have made sense
You need to be playing the right deck to take advantage of Metalworker, which is probably the reason his power dawned on all of us so slowly

Adrix and Nev, Twincasters Cenote Scout Cold-Eyed Selkie Combine Guildmage Deepfathom Echo Deeproot Champion Deeproot Elite Deeproot Historian Deeproot Warrior Deeproot Wayfinder Evidence Examiner Forerunner of the Heralds Gaea's Skyfolk Giltgrove Stalker Hakbal of the Surging Soul Jade Bearer Jade Guardian Jadecraft Artisan Jadelight Ranger Jadelight Spelunker Jungle Delver Jungleborn Pioneer Kiora's Follower Kiora, Sovereign of the Deep Kumena's Speaker Kumena, Tyrant of Orazca Merfolk Branchwalker Merfolk Mistbinder Merfolk Skydiver Merfolk of the Depths Nev, the Practical Dean Nicanzil, Current Conductor Prime Speaker Zegana Quandrix Pledgemage River Herald Guide Seeker of Sunlight Selkie Hedge-Mage Sentinel of the Nameless City Shapers of Nature Singer of Swift Rivers Skyclave Invader Swift Warden Tatyova, Benthic Druid Tatyova, Steward of Tides Thrasios, Triton Hero Thrasios, Triton Hero Tishana's Wayfinder Tishana, Voice of Thunder Topography Tracker Tributary Instructor Tuvasa the Sunlit Vineshaper Mystic Vorel of the Hull Clade Waker of the Wilds Wistful Selkie World Shaper Zegana, Utopian Speaker

If you have a way to loop it (like Crucible of Worlds plus Academy Ruins ), you can lock someone out of the game indefinitely
Review The Pokemon TCG for Gameboy was one of my favorite games growing up, and I always wanted a sequel that added new cards and added more of a mainline game overworld