I was just hoping that Death spells that absorb health (ghoul, vampire, Wraith, and Scarecrow) could be boosted by Sun school cards that increase damage. I bought back all my training points (over 5000 crowns) to find that I can't enchant them. I find it disappointing. It isn't a huge deal because there is still Skeletal Pirate and Skeletal Dragon, but it would be nice.
I was disappointed at first too, but, I've found that the sun school makes poison that much more usable. Specially if you are farming the jadi oni or any other life boss.
:D i am in school of the sun. i was dissapointed when i picked school of the sun because i wanted to be in school in the moon, but i realized that if fire ( my first school) doesnt do anything substancial that the sun school could actually boost my attacks. i would recommend the sun school to fire wizards. btw: it also makes sense because fire is like the power of the sun.