We love a good board wipe here, and Ultima is one that can help you deal with the pesky green-black decks and aristocrat decks that love to cash-in on creatures dying
They come in two kinds
Hare Apparent Foundations, Common Hare Apparent is a 2/2 and when it enters, it creates a 1/1 Rabbit token equal to the number of other creatures you control named Hare Apparent on the battlefield, and also, you can run as many copies of the card as you wish
Other strong Tribal cards that work here are And They Shall Know No Fear, Cavern of Souls, Urza's Incubator, Crippling Fear, Pact of the Serpent, and Species Specialist
Moreover, you have to pay attention to the risks of non-inkable cards - bottom some of them if your opening hand has more than two, and avoid aggressive mulligans if your deck runs too many (say, more than 25 percent) non-inkable cards
Of course, you cant submerge avatars with Nelly Longarms , but with Pudge Butcher you can fight that avatar an additional time