As I promised in the description of yesterday's video, I'd like to show you my Sharena Build with all the Tempest Trial buffs, a buff from Legendary Grima and boosts from Hone Atk 3 & Hone Spd 3.
She can reach up to 48 Spd, if not more with all of this. (Maybe refined Yato buffs from Corrin or refined Falchion from Marth as well as Drive's and Spur's in the C-Slot or S-Slot of other units.) Also 61 Atk is already pretty insane but can still go higher.
And one more good thing about this: Heavy Blade 3 or Flashing Blade 3 work beautiful with this set especially when using Desperation 3, too. You basically always charge Moonbow or Glimmer in one hit and you always have great K.O.-Potential against every red unit, most blue units, some green ones & most colorless ones as well.