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.
| 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.
![Brass's Tunnel-Grinder // Tecutlan, The Searing Rift (Extended Art) [The Lost Caverns of Ixalan]](http://tothetablebgc.myshopify.com/cdn/shop/files/b5c2da21-f917-5dba-bd22-2f769a3f8615.png?v=1730422582&width=1445)
![Brass's Tunnel-Grinder // Tecutlan, The Searing Rift (Extended Art) [The Lost Caverns of Ixalan]](http://tothetablebgc.myshopify.com/cdn/shop/files/645776fd-3ce4-569c-b2cd-5b40373e27c8.png?v=1730422582&width=1445)
![Brass's Tunnel-Grinder // Tecutlan, The Searing Rift (Extended Art) [The Lost Caverns of Ixalan]](http://tothetablebgc.myshopify.com/cdn/shop/files/db940d06-5e3d-4831-a200-de614c093aca.png?v=1776602057&width=1445)
