Look at Canoptek Scarab Swarm for a similar version that synergizes with a different subset of decks
The two ink combinations are Amber & Emerald and Ruby & Sapphire
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
Combining these things together on a card that has relevant and interesting abilities is even better
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