As a 7/7 with trample, its already a nightmare to block, but the enters-the-battlefield trigger is what truly breaks the game open
Im a little dubious about using a seven-mana creature as a way to enable reanimatorat that level of mana, you could just start hard-casting the giant creatures
If you do, that song gets tucked into the bottom of your deck, so that card isnt gone for good, but you probably wont see it for a while
While it includes a couple of "pillow fort" options to make it harder for opponents to attack you, your main protection will be how much value you bring to the board
Oh, and one more thingyou can preorder booster displays for pickup at the Prerelease as well
I honestly think almost every green deck (that has creatures) will play this