In short, it's easy to fall off the horse.
It's too targeted. Ian thought angrily. Can this world not be healed? Can even prophets not avoid falling off their horses?
Moreover, the most important point is...
—Is it to let the Frost Butterfly get hurt?
If it could be avoided, Ian naturally wouldn't want the Frost Butterfly to get hurt... but the problem is, given the current situation, the likely development would be the Floating Stone Aircraft being shot down by the Tianhong King, with most pilots severely injured, barely alive under the protection of the aircraft and his own tough Inheritance.
The two Fairy Misses protect themselves and the Frost Butterfly, he's fine, while it is very likely that the Frost Butterfly would suffer very serious injuries, might not be on the brink of death... but overall, these are results under the guise of deception.
