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.
Near Mint - $500
Lightly Played - $400
Moderately Played - $400
Heavily Played - $300
Damaged - $300
Near Mint Spanish - $500
Lightly Played Spanish - $400
Moderately Played Spanish - $400
Heavily Played Spanish - $300
Damaged Spanish - $300
Foil Prices
Near Mint Foil - $700
Lightly Played Foil - $600
Moderately Played Foil - $500
Heavily Played Foil - $400
Damaged Foil - $400
Near Mint Foil Spanish - $700
Lightly Played Foil Spanish - $600
Moderately Played Foil Spanish - $500
Heavily Played Foil Spanish - $400
Damaged Foil Spanish - $400