Quote Originally Posted by Jiro View Post
Wasn't Seto said to have been turned to stone with some kind of super toxin? I thought there was a slight explanation as to why a soft wouldn't work.
Quote Originally Posted by ReloadPsi View Post
Because he had poisoned arrows stuck in him that turned him to stone. Applying a Soft would've probably caused the arrows to take effect again immediately, and pulling them out would've been impossible as pulling an arrowhead out of a stone statue would require you to chip a lot of it away, especially given how arrowheads are usually designed so that they can't be removed without causing even more serious harm... this would then cause the cumulative injuries caused by such an endeavour to kill Seto as soon as they threw another Soft.
Especially considering the Phoenix Down issue here. Also Zangan mentions that he kept using a Cure spell on Tifa's open wounds after the Nibelheim incident and it didn't help.

Source: my older sister and her partner know a lot about archery.