Burrowing Worm

Whenever you shuffle your library, you may put Burrowing Worm into your dirt zone from your library. (Cards in dirt zones are face down. You
can cast cards from the dirt zone for their burrow
cost.)

Burrow {g} (You can cast cards from the dirt zone by paying their burrow cost)
{t}: Put Burrowing Worm on the bottom of your library.