it gets rid of the second quick ball and doesn't mess anything up on the pie chart
As a note, most infinite flicker combos tend to use a combination of a handful of cards: Panharmonicon, Felidar Guardian, Ephemerate, Cloudshift, Restoration Angel, and Lumbering Battlement
Is it mechanically innovative
I love the story implication of Hakbals expedition digging deep enough to finally reach their true goal at Ixalans Core, and mechanically its a different (fairer) galaxy to the kind of non-games Thoracle is infamous for in cEDH or Constructed
The same goes for Zuko, who starts out as mono-red but ultimately becomes red-white-black (or Mardu)
Pairing it with Zealous Conscript creates an infinitely large army of 3/3 creatures with haste, pairing it with Worldgorger Dragon gives you infinite mana and infinite enter-the-battlefield triggers, and pairing him with Combat Celebrant gives you infinite combat phases