This excellent flip land eliminates your maximum hand size until the end of the game, but its especially useful when Sea Gate, Reborn saves you from being mana-locked early on
It seems innovative enough, but the difficulty of tracking which doors are unlocked can be a headache (Strike three!), given other things that we need to track on the battlefield
If you want to go the extra mile, run Keruga as a companion and see how well you do with your mana curve pushed up just a bit
The trick is pairing this with Badgermole Cub, which allows you to Earthbend a land to sacrifice, resulting in a net gain of four lands and five landfall triggers in a single turn
I hope my personal disdain for having spaceships, sonic screwdrivers, transforming robots and video game characters all mixed up into what was once a game with a strong medieval fantasy theme hasn't tainted my writing too much