Cards like Stitch in Time, which lets you take an extra turn after a successful coin flip, will let you build a mana engine, while Krark's Thumb will allow you to flip again
Lightning Runner can use eight energy counters to create an additional combat and untap all of your creatures
CGC's article about the history and process of verifying these cards is absolutely fascinating
You'll want to have: Training GroundsTraining Grounds Omen HawkerOmen Hawker James, Wandering DadJames, Wandering Dad The Enigma JewelThe Enigma Jewel If you're running mostly Islands you can even run High TideHigh Tide to set up that one big turn
WotC just went ham and jammed a ton of great Magic cards along with existing Final Fantasy artwork from some of the most recognizable FF artists, to make pack-cracking even more exciting
A Ruby card with a 5 Ink cost, Donald Duck is also a Floodborn character, so he can be Shifted into play for just 4 Ink