Despite what the title would lead you to think, Rise of the Floodborn wasnt noteworthy so much for the Floodborn characters it introduced (which were, of course, great) as it was for significantly up-leveling the Disney Lorcana game as a whole
Sport: TCG Cards
Essentially, if you have a full party with all four of these on the board, you can pay one white, one blue, and one black mana to give the Warrior lifelink, deathtouch, and make him unblockable (deathtouch and unblockable at the same time has no real use, but thats still OP to think about)
Blue has 'Keen Engineering', which slots Sai, Master Thopterist into the driver's seat
He will immediately challenge you to a duel
What if we could get under our opponents counterspells by going all in on speed, and consistently put a fatty into play on turn one or two like the Legacy deck