Pair it with Shalai and Hallar or All Will Be One or anything else that makes it getting a counter into a point of damage, and you win
When I first saw Grim Monolith at the Urza's Legacy prerelease, my eyes almost fell out of their sockets
It's also an Assassin's Creed card, which means it's in a product that wasn't opened much and doesn't have as many reprint opportunities
As you add Trainer cards to your deck, pick a few that directly support or boost your Pokmons power and fit into your overall strategy
And still you will not have suffered enough. Greven il -Vec, to Gerrard Illustrated by Brom Part of the Reserved List Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
If it does trigger but you somehow control one or more face-down permanents when it resolves, the ability won't do anything