Whenever a nontoken creature enters the battlefield, if Genesis Chamber is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token.
"As the experimental population grows, so do the number of myr. It's a perfect equilibrium."
—Memnarch
Near Mint - $3.300
Lightly Played - $2.700
Moderately Played - $2.300
Heavily Played - $2.000
Damaged - $1.700
Near Mint Spanish - $3.300
Lightly Played Spanish - $2.700
Moderately Played Spanish - $2.300
Heavily Played Spanish - $2.000
Damaged Spanish - $1.700
Foil Prices
Near Mint Foil - $29.600
Lightly Played Foil - $23.700
Moderately Played Foil - $20.700
Heavily Played Foil - $17.800
Damaged Foil - $14.800
Near Mint Foil Spanish - $29.600
Lightly Played Foil Spanish - $23.700
Moderately Played Foil Spanish - $20.700
Heavily Played Foil Spanish - $17.800
Damaged Foil Spanish - $14.800