When Brass's Tunnel-Grinder enters the battlefield, discard any number of cards, then draw that many cards plus one.
At the beginning of your end step, if you descended this turn, put a bore counter on Brass's Tunnel-Grinder. Then if there are three or more bore counters on it, remove those counters and transform it. (You descended if a permanent card was put into your graveyard from anywhere.)
Reverse Type:
Legendary Land — Cave
(Transforms from Brass's Tunnel-Grinder.)
T: Add R.
Whenever you cast a permanent spell using mana produced by Tecutlan, the Searing Rift, discover X, where X is that spell's mana value.
NM-Mint - $4.60
Lightly Played - $4.40
Moderately Played - $4.10
Heavily Played - $3.70
Damaged - $3.00
NM-Mint Non English - $4.60
Lightly Played Non English - $4.40
Moderately Played Non English - $4.10
Heavily Played Non English - $3.70
Damaged Non English - $3.00
Foil Prices
NM-Mint Foil - $5.90
Lightly Played Foil - $5.60
Moderately Played Foil - $5.30
Heavily Played Foil - $4.70
Damaged Foil - $3.80
NM-Mint Foil Non English - $5.90
Lightly Played Foil Non English - $5.60
Moderately Played Foil Non English - $5.30
Heavily Played Foil Non English - $4.70
Damaged Foil Non English - $3.80