What is the best skill for C slot? My Nino is such a killing machine there is no need to debuff anything, what do you recommend for her C skill? I chose to use fury than her own swift sparrow so she can drop to desperation range fighting melee units instead of getting the danger of getting counters. Assisted by axe and flying azura and a repositioner, she clears the whole tempest trial with 1hp basically. Also is there any other seal that will work better than phantom speed? Or is phantom speed overkill? Coz right now I'm killing everything in 1 turn except red+trangle adept or green tomb breaker.