Best summons in Fire Emblem Heroes?

[Super_Boom]

So far I have 5-star Lucina, Lyn, Julia, and Ogma. Hoping to get Eirika or Eiphraim before this event finishes, but I need to wait a few days to get enough orbs.

I have too many 4-stars too count, but I use a 4-star Est, Clarine, and Frederick for the higher level maps to fill out my team. Also a 4-star Sharena I kept feeding feathers into, but don't use that often..