Mite-Wyrm Colony

Any time during your turn you may put all cards
in your hand face-down on the table. They
become colorless X/X Mite-Wyrm creature
tokens with "When this creature would go to the graveyard or leave play it is played (face-up) for
free under its owner's control", where X is the
number of Mite-Wyrms in play. Give control of
all Mite-Wyrms created in this way to opponents
of your choice.