mtg counterspell commander deck Ten Counterspells You Should Play in Counter target spell. Card Kingdom

Card not found, on the other hand, is a very costly sweeper, but in some formats it just might be worth it

Stormcallers Boon Stormcaller's Boon could be a legitimate win condition for a low-power deck

The millstone set in an empty void with its only goal to slowly bear down on a large mass is a pretty good representation of the unyielding force of mill decks that only aim to destroy your deck in as little time as possible, making it perfect for mill-themed decks

These are staples in EDH, and Forgotten Cave specifically saw play in Modern Dredge for years

One of the best green artifacts in Magic, Lifecrafter's Bestiary does a great impersonation of a permanent Glimpse of Nature, with a free scry on top every upkeep