Adder-Staff Boggart Afterburner Expert Akki Avalanchers Akki Battle Squad Akki Blizzard-Herder Akki Coalflinger Akki Drillmaster Akki Ember-Keeper Akki Lavarunner Akki Raider Akki Rockspeaker Akki Ronin Akki Scrapchomper Akki Underling Akki Underminer Ankle Shanker Ardoz, Cobbler of War Arms Dealer Auntie Ool, Cursewretch Auntie's Snitch Battle Cry Goblin Battle Squadron Battle-Rattle Shaman Battle-Scarred Goblin Bazaar Trader Beetleback Chief Ben-Ben, Akki Hermit Bile-Vial Boggart Blackcleave Goblin Blisterstick Shaman Bloodcrazed Goblin Bloodmark Mentor Bloodshot Trainee Bloodstone Goblin Boartusk Liege Bog Hoodlums Boggart Arsonists Boggart Birth Rite Boggart Brute Boggart Cursecrafter Boggart Forager Boggart Harbinger Boggart Loggers Boggart Mischief Boggart Mob Boggart Prankster Boggart Ram-Gang Boggart Shenanigans Boggart Sprite-Chaser Boggart Trawler Boltbender Boneclub Berserker Boom Scholar Boomstacker Boros Recruit Brash Taunter Breeches, Brazen Plunderer Breeches, Eager Pillager Breeches, the Blastmaker Broadside Bombardiers Burnout Bashtronaut Cacophony Scamp Cam and Farrik, Havoc Duo Caterwauling Boggart Champion of the Weird Chaos Spewer Chasm Guide Cheering Fanatic Chimney Rabble Clamor Shaman Conduit Goblin Conspicuous Snoop

This is good for a lot of reasons
It is an artifact, which means it can be Whirred for, can make Blue mana with Urza, and power up Urzas Saga Constructs
Blue Sun's Twilight Stealing your opponent's best creature is always a top-tier Limited play, and the copy ability here makes it even better
Boy do I have the card for you