Number Nine The ultimate, "Anything you can do, I can do better!" card
A 3/3 Vampire for four mana, Olivia's controller can pay two mana at any time to have Olivia deal two damage to any other creature, turning it into a Vampire in the process, and putting a +1/+1 counter on Olivia
Targeted hate is flexible, but it requires better timing
Cards that give you alternate win conditions can also be weird, and youll see a few of those
Otherwise, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle
Bonfire of the Damned and Thought Scour This is even more of a stretch than Rancor and Wolfir Silverheart, but I think its worth pointing out that with red and black trading places on the color pie and red becoming blues neighbor, U/R Delver looks a lot more likely