Grenzo, Dungeon Warden enters the battlefield with X +1/+1 counters on it.
2: Put the bottom card of your library into your graveyard. If it's a creature card with power less than or equal to Grenzo's power, put it onto the battlefield.
NM-Mint - $1.20
Lightly Played - $1.10
Moderately Played - $1.10
Heavily Played - $1.00
Damaged - $0.80
NM-Mint Non English - $1.20
Lightly Played Non English - $1.10
Moderately Played Non English - $1.10
Heavily Played Non English - $1.00
Damaged Non English - $0.80