While in theory the use of a Role results in diminishing returns, the Gruul Mice deck's games were often over too fast to make playing Bull Rush a liability
But do you run Faithless Looting in your mono-red EDH deck if you dont care about the graveyard
Trying to keep pace with a Hierarch when playing a highly aggressive deck is a head slumping experience, and due to the lack of competition most decks with access to the colored mana would choose this over other creatures in the same price range
Hooded Hydra is just a Hydra, but when it dies I'll create a 1/1 Green Snake creature token for each +1/+1 counter on it
in addition, you may cast a card with converted mana cost 5 or less from your hand without paying its mana cost
Note that there's no timing or per turn limit on the sacrifice ability, so you can make tons of counters, but you only get one Food per combat