Atk/Spd push on Elise?

I do think that Atk/Spd Push is great on any Healer with great Atk and Spd. However, before you go off and give your Elise the skill, I ask that you consider these things:

1. Is Elise a unit that you really like and want to invest in, despite being hard to pull extra of (in case your current Elise is -Atk or -Spd, or you might want to make a merge project out of her later on)?

2. Are you really willing to sacrifice a limited unit in Sum!Tana, who is good in her own right, to give the skill?

If you have considered the above and are still willing to go through with it, then I think that Elise is the best Healer to give Atk/Spd Push. Otherwise, Priscilla, Nanna, or Clarine (all much more accessible) are great alternatives in case you want to start a Healer merge project sometime in the future, or if Elise has one of the above banes. If you don't have extra Sum!Tana and like her, I suggest keeping her for the time being; or if you don't have one at the moment, then perhaps look into Atk+3, Spd+3, or Brazen Atk/Def as cheaper alternatives rather than try to pull Sum!Tana exclusively for said skill.

Brazen Atk/Spd with Miracle is pretty great on her. If you can manage to give her Hone Cavalry buffs, even better!