it seems that I just got my first one (a fire shard) to drop off the lvl 49 boss.
so, they may just be super rare boss drops.
other than that, you'll probably need to buy them with hearts. at least for the moment.
and if I understand correctly, the nymphs start more animal, but their higher forms become more and more human.
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update
it appears hearts are also rare drops on bosses as well. err, or super bosses, whatever that is
Last edited by ShiroSeigi; 12-27-2017 at 08:01 PM.
Playing: Crystal Maidens, Girls on Tanks, Bitch Hunter
Cunt Wars (Rank 11)