Energy is the same; 4-8 dayly or the very rare 100. But I prefer the Alicorn 22h timer above the 24h from Unicorn to keep my collecting about the same time!
Unicorn drops spellbound dew, that's a really good thing, the 22 shield and 8 staf tookens from last hunt until this (2 months) are a little bit disapoining from my 1st Unicorn. Armored Alicorns dropping Mithril as a rare drop.