Couple that unblockability with a ward ability that costs so much it might as well be hexproof, you have an incredibly lethal threat
Playing it early in the game can help you get a leg up on your opponent, and gaining multiple mana sources during a turn can definitely contribute to winning a game
Thats already a great start, but dont discount that attack trigger either
As much as I enjoyed the enchantment-based approach with the Classes, I prefer these artifacts because they offer a more versatile approach, since you can pass the jobs around
It only works once each turn, so you'll want to stack a large number of counters at once, or find ways to put counters on creatures during opponents' turns to trigger multiple times per turn cycle
It's got a great 2/1 two mana colorless dork artifact size