Players can Shift, and play this card on another Kronk card for a lower cost of 5 Ink, and when this character banishes another character, the player can play a character card with a cost of 5 or less for free
Scrooge McDuck Resourceful Miser is a 4-cost Character with a 4|4 stat line, so it already is a good body to have on the board, and when played you can look at the top 4 cards in your deck and add an item card to your hand
They cost you nothing extra and help support the site, data tools, and server costs.
Cutting it from a competitive deck and trying to swap in something else would almost never be recommended because the card is too important to the deck's overall strategy
Some cards such as Cogsworth, Grandfather Clock can grant other characters the Resist keyword
They can still be played in the official card game, but some players may want to remove the ability to play with promotional cards to keep gameplay more official