User blog comment:Lovelypikachu/What is the best unit with double sphere ?/@comment-25251916-20141027010251

Hello again. Since sphere frogs are limited in number at the moment, they will be treated like gems of higher value. Lillith is considered a good option if you plan to use her exclusively and by that, I mean a lot throughout your adventures. I question the Divine Stone but I understand the reasoning behind it. The ATK, DEF and REC boost of 50% seems appealing since SBB on LIlith would be up for the majority of the time but it is sometimes hard to survive harder content with a limited HP pool. HP usually does outscale DEF, in my opinion after reading several articles and posts about it. It is always up to preference.

Personally, I would hold off a sphere frog for her if I need to make any adjustments going against Maxwell or any hard content for the first time. However, I have favored a Legwand Gem + Sol Creator combo after helping my friend. That Sol Creator seems like it doesn't really help her since she would have her SBB up anyways, but it also assists your other units in filling their BB gauges.

Looking below on the other comments, I would highly recommend a sphere frog on Darvanshel. He is a key unit in the shifting metagame. With dual spheres, tis allows him to be equipped with an Evil Shard and Dandelga if possible. This combination allows him to easily fill his BB and at times his SBB. With the Lilly Matah + Darvanshel combo I mentioned in you last blog post, you'll be able to sustain through damage mitigation against most of the upcoming content.

Lilly Matah is a great unit and all but she doesn't really have a use for a sphere frog. If you do sphere frog Lily Matah, it would be recommended to have a defensive type of sphere. Since other BB gen spheres feel redudant on her.

If Elmio is your only major premium, wait and see if you could have a better option such as a Altri. Other than that, a sphere frog for her should be used later down on the road since there is better options. I plan to do the same for my Elimo considering the tree has eluded me so far. The Drevas and Evil Shard or Magic Ore would work wonders for being able to get heals up. Sometimes those heals at the moment could mean a huge difference.

TL;DR Darvanshel is a great candidate for a sphere frog. Lilith is another option if you do use her a lot on your main squad. With upcoming releases, sphere frogs will become more easily attainable but are still rare at the moment.