Voltaic Key

Good way to get your Mana Vault untapped w/o 4CMC or takin' the 1. Give your Darksteel Colossus Vigilance...almost. Untap your opponent's Trinisphere if they untap it during their turn ^^

Eerm, scratch that last comment about the Mox Opal; didn't realize it's a legendary artifact. Even so, I think this combo with prototype portal, among many others, is still going to be amazing!

Will be amazing with scars of mirrodin. Combo this with prototype portal and Mox Opal and you'll be able to effectively double your mana pool every turn if needed. I can see this seeing play in standard

Metalworker was always my fav for the key. Good thing alara rotates out or esper would get some NASTY tricks w master transmuter and artifacts w comes into play abilities. Im kinda shocked to see this reprinted--wasn't this actually banned in some formats like legacy? Im not complaining though. Time to shake the dust off these keys!

ROFLMFAO at the guy who said VOLTAIC KEY was horrible! This is an amazing card, always will be, and its very fun in the P vs TC decks. Try it out with the worn powerstone, or as already stated the phyresxian colossus, I already have rthe deck and use these with icy manipulators for some real fun lockdown :)

This+Timevault= infinite turns

gilded lotus and volatic key. oops infinite mana.

This is a perfect combo to put together with Phrexian colossus if you also play dueling grounds with it the colossus will be unstoppable as a 8/8 creature that can't be blocked and can be untapped without paying 8 life. just hope that your opponent doesnt have disenchant :P

Nice Card. Besides the Colossus combo, untap oh I don't know mill stone or better yet Basalt Monolith.

Except uhhhh... how are you gonna keep untapping your key? You can get 13 mana with 4 voltaic keys out.

Wow what a bad card. The guided lotus combo really hacked me off.