That six Energy will need to come from somewhere else for this artifact to be as strong as Quicksilver Amulet (4 drop, Pay 4, Tap: You may put a creature card from your hand onto the battlefield)
We've added two more picks to this list from the Chaos Rising expansion
[40] It was initially considered to be one of the most powerful cards, so overpowered that production was ceased, causing it to gain a high monetary among collectors
Format: Commander Estimated Bracket: 3 (1 Game Changer) User Submitted Deck Deck Date: May 6, 2018 Archetype: Krenko, Mob Boss Loading
Keep in mind that this is a place damage counters effect, so not even Tera Pokmon are safe
For three mana, you get to draw a card and then exile a nonland card from your hand, putting time counters on it equal to its mana value