ErrataRules Reference 1.8
Yellow Jacket: Changed “Yellow Jacket” to “Yellowjacket”
Erratum
Title should read “Yellowjacket”. Text should read: “Response: After Yellowjacket enters play, search the top 5 cards of your deck for an upgrade and add it to your hand.” (Changed “Yellow Jacket” to “Yellowjacket”.)
— Rules Reference 1.8