mtg frog deck commander Grolnok, The Omnivore you may mill that many cards Frog Commander MTG EDH Deck

An effect that doubles said expense

If you dont know, Herbert West is a character originally created by HP Lovecraft and later adapted for the cult film Re-Animator

Once it consecrated the dead

9 Mazes End Your First Alternate Win Condition Maze decks are often one of the first alternate ways to win a game a new Magic player discovers

You could probably beat some mono-white pile with Sanctifier since none of their other cards matter, but the fact it just shows up as the cherry on top of one of the best decks in the format that already presents a ton of other issues and can freely recast Sanctifier off Lurrus of the Dream-Den is a bit too much to handle