Plus: 10 specialty cards and 1 Foil-Etched Display Commander
First up, its an enchantment, so it can be interacted with with twice the amount of removal spells
What Is the Correct Amount of Protection for an EDH Deck
This means that, even if you have seven cards in your graveyard when you first cast the spell, if you lose cards from your graveyard before it has resolved on the stack, like through paying escape costs or a well-timed Tormods Crypt, you could fail to meet the threshold by the time it resolves
A Tarmogoyf is fairly unreliable threat in cube because there will be things to block it most of the time
In order to create this list, I looked at a list of all of the creature types in the game, and then selected any I thought would have a chance, even if I was skeptical