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 Foil - $3.60
Lightly Played Foil - $3.30
Moderately Played Foil - $2.90
Heavily Played Foil - $2.60
Damaged Foil - $1.80
NM-Mint Foil Non English - $3.60
Lightly Played Foil Non English - $3.30
Moderately Played Foil Non English - $2.90
Heavily Played Foil Non English - $2.60
Damaged Foil Non English - $1.80