Thank you for the quick answer.
Well i'm an idiot, i could have realised the revival crystal's jap name matched one of the units in the TP.
I took a look at this rowanna. She doesn't seem that strong (or am i mistaken ?), would you say it is better to wait for another one ? And if i wait for the next revival unit, will the bonbori i gathered go to waste ? (i don't have units with rowanna's skill)