Name taken by Mana Leech. How about "Mana Leech (not the Urza's Saga one)"?

Yay :)

Heh. Also blegh.

Mana drake? Also, hm, I wonder how this would play. Presumably it's normally best just to pay the mana to destroy it, but possibly not if both players have ~ 3 lands.

Ok - my thoughts on what this is for: It's supposed to mainly be an interesting speedbump. Drop it on 3, opponent then misses their 3 drop and you've gained a turns advantage. (Well, maybe - depends if you wanted to cast something in main1)

Then, of course, there's the symmetric lock, that you can turn off when you need to (but it stays turned off). If you can find a way to give it lots of toughness, or non-mana regeneration or heavens-forbid indestructibility - it becomes a nice "Ok, gamestate as it is, let's play" (And alternate costs become interesting workarounds)

And finally, if you can find some way of giving it a mana-free untap ability as well, you can break the symmetry and win (though your opponent still has an instant-speed window to act in when you act.)

But mainly, it's a speedbump that's just egging people to find a way to abuse it.