This four cost Amethyst card has a relatively straightforward ability, when it comes in to play, you draw a card
Old Flitterfang gives you Food on each end step if a creature died that turn, including your opponents turns and creatures, and it has a built-in sac outlet
Then, Madam Mim can bounce him safely back into your hand, setting up a vicious cycle that, if it isn't stopped, can give you a huge lore lead
Galaxy foil cards can only be found in Unfinity Collectors Boosters
For instance, Rhonas the Indomitable only costs 1 green mana with the reduction, and has fantastic stats and abilities with a negligible drawback
Predation Steward I can see someone talking about how you can use this to pump stuff, but it's too slow, too expensive, and generally will too often be too limited in its uses