From: http://tappedout.net/mtg-decks/100-gruul-zoo/

$100 budget version of one of modern's most played deck.

Sideboard is not included because it is entirely dependent on your meta and should be worked on in collaboration with others.

Things to know about Zoo:

Works better as Naya but manabase costs are pretty high if you go that route. We are splashing white since it is very easy and helps Wild Nacatl go crazy.

Tarmogoyf is one heck of a magic card.