Don't sleep on her deathtouch either
Sliver decks are based around each card granting incremental bonuses or individual keywords until you have an army of creatures with haste, +1/+1, vigilance, poisonous, trample, reach, and more
Other cards like Quina, Qu Gourmet and Knuckles the Echidna are from Universes Beyond properties and unlikely to have any other cards with the same creature type
Its components might be quite disparate, but all of the pieces are meant to work together
Card advantage is pseudo-resilience too when your deck is as cheap and direct as white weenie and that is another aspect white is doing well on lately
If a different copy of Carnival Barker enters the battlefield, or if Carnival Barker leaves the battlefield and returns, it's a new object and its ability can be activated