Cumulative upkeep—Sacrifice a creature. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
The Phyrexian minds that constructed it did not live past its awakening.
NM-Mint - $1.30
Lightly Played - $1.20
Moderately Played - $1.10
Heavily Played - $1.00
Damaged - $0.70
NM-Mint Non English - $1.30
Lightly Played Non English - $1.20
Moderately Played Non English - $1.10
Heavily Played Non English - $1.00
Damaged Non English - $0.70