The skills you acquire cannot be equipped to multiple Heroes simultaneously, so you'll need to think carefully about how each skill can be used and which Hero can take best advantage of its effects. You can tap and hold on a skill's icon to see detailed information about it.
Enemies in this event have Sacred Seals that make the effects of color advantages more potent than ever. This affects colorless units too, so make sure you bear color matchups in mind when you're choosing which Heroes to use against which enemies!
Damage sustained by your Heroes in this event won't recover between battles, which means you'll need to be even more careful than usual with your strategy. Safe Havens can restore your HP, but these are limited, so take advantage of recovery skills or include a healer on your team to keep your Heroes in fighting shape!
If the skills you've obtained seem like a poor match for the Heroes in your team, you can select Unwind Time from the event's main page and try again. You will have two options: to start again from the very beginning, or to return to just after the last sub-boss you defeated. If you start from the beginning, you'll be able to reform your team if you wish.
