Also, some things like AC, AMC, AGIL, ACC, can't be boosted, unless they are under the bonus stat thingy while rebirthing(not sure if they are or not, i forget), or using gems/orbs.
Someone correct me if I'm wrong, cuz I'd like to know.
As of now, only things you can TEMPPOWERUP is DC,MC,SC,ASPEED,HP,MP