Spore Frog is an excellent cheap creature that will both protect you and build up a graveyard
You can view the Brackets System Beta page and the Game Changers on Wizards official site now, which cuts down on confusion for those wanting to look up the latest version to share with their playgroups
There is one issue, however, that everybody seems to agree on: the Reserved List is a bad, stupid, backwards policy that is at best inconvenient and at worse actively killing two of the games best formats
8 Wrenn and Seven Because seven ate nine
Additionally, it lets the caster scry 1 which for an aggressive deck can be an important bit of card selection
Enchantment - Saga Cadric, Soul Kindler The "legend rule" doesn't apply to tokens you control