Fling deals damage equal to the sacrificed creature's power to any target
One easy way to tell if a double-faced card is transforming as opposed to modal (like cards from previous sets, such as Strixhaven: School of Mages ) is that each transforming double-faced card will have an ability that either transforms it into their other face or has it enter the battlefield or be cast transformed
I love it because it allows various strategies, including focusing on growing creatures, setting up the more powerful oil cards, or passively killing someone with poison to flourish
Some help draw cards like Circuit Mender or Spirited Companion, some help save your creatures like Plumecreed Escort or Selfless Spirit , some remove problem cards like Hanged Executioner and Inferno Titan , and some help your army of tokens to overrun your opponents, like Jazal Goldmane and Tetsuko Umezawa , Fugitive
Sylvan Caryatid, Courser of Kruphix, and Fleecemane Lion are all gone