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 - $1.50
Lightly Played - $1.20
Moderately Played - $1.10
Heavily Played - $0.90
Damaged - $0.80
Near Mint Spanish - $1.50
Lightly Played Spanish - $1.20
Moderately Played Spanish - $1.10
Heavily Played Spanish - $0.90
Damaged Spanish - $0.80
Foil Prices
Near Mint Foil - $11.40
Lightly Played Foil - $9.10
Moderately Played Foil - $8.00
Heavily Played Foil - $6.90
Damaged Foil - $5.70
Near Mint Foil Spanish - $11.40
Lightly Played Foil Spanish - $9.10
Moderately Played Foil Spanish - $8.00
Heavily Played Foil Spanish - $6.90
Damaged Foil Spanish - $5.70