With the potential to add both +1/+1 counters and even trample to a wide variety of creatures, you can get a lot more out of weaker creatures with the right setup
Heres the art: Popular interpretation suggests that the beak of Palinchron is actually a trick of perspective
Its also a really cool card that rewards you for discarding, and it can be a wheels commander, a madness/mayhem commander, and more
Flashback allows casting a card from the graveyard while Cage forbids that
In this case, the spell side provides an infinite-hand-size emblem while drawing you lots of cards, and the Sea Gate, Reborn side is an untapped mana source if needed early on
Since you can always choose X=0, the two produce infinite untaps, creatures entering, etc