The Goad mechanic and its ruthless advocates are prime examples
First and foremost we're adding the final great Vampire Aristocrats: Vito, Fanatic of Aclazotz, Pawn of Ulamog, Vraan, Executioner Thane, Voldaren Bloodcaster, all are vampires that provide payoffs for sacrificing things
Scrooge McDucks ability allows you to play an Item card for free, whenever he banishes a character in a Challenge
Its not even on the Reserved List, so you could expect it to get a reprint just like other cards seen in Portal Three Kingdoms
These budget decks are easy to craft using Common Wildcards earned from Boosters, which are a dime a dozen, so it doesn't take long to accrue enough
Esper Sentinel either taxes your opponents mana or draws cards, which is a lot for a 1-drop with human and artifact synergies