When I first saw this guy, I thought it would be cool to break him. I never got around to trying and now I'm not even sure what the best way to go about it would be. My first idea was dropping it with Sneak Attack and then using it to pull copies of Colossus of Sardia or something of that nature into my hand (to be dropped with Sneak Attack). A 9/9 wall that can attack if you pay 4 is nothing special. Grozoth will come in handy either by using transmute to dig for something else good or by filling your hand with other overcosted permanents when it comes into play. Thankfully, it doesn't have to actually be played from your hand in order for its ability to trigger. After all, it does cost a lot. Some of the things you can put into your hand with Grozoth include... Colossus of Sardia: I like this one for use with Sneak Attack because with Sneak Attack in play and Grozoth in your hand, you can pay RRRR to swing with 27 damage of pure trample. Teeka's Dragon: Not sure what you'd do with a few of these, but it is an option. Krosan Colossus: Not as good with Sneak Attack since it lacks trample, but it's a better alternative if you plan on keeping it out for a while. The Bringers: Any of them, or all of them for that matter. Various legendary creatures: Spirit of the Night is a particularly good one, but I don't know that any of them is actually worth using Grozoth.