With decks like Mono Brown picking up popularity, it's really nice to also have main deck Stony Silence against the opponent
You could also go artifacts or enchantments, since there are also many artifact creatures and enchantment creatures, especially ones that would give you additional cost reduction
Hazel, The Odd Acorn Gang, Chatterfangthey don't want Pest, Insect, or Raccoon tokens
If you go down the combo route with Gravecrawler and Warren Soultrader, then Phyrexian Altar is a great sac outlet to take advantage of
As a Convoke instant at six mana, it draws a card for each permanent you control of the chosen type, and in a creature-heavy tribal deck it can refill a hand in a single end step
Party Time Party Time isnt a super competitive deck on the face of it, but it does contain more than a couple of staples you want in a cEDH game