It is only a rules wonk mindset that interprets this question as "only about the rules." From another point of view, the guy is throwing out 6 random mini-questions basically about how he can limit the superpower he sees with a character having a flying mount. A legitimate answer to that is "don't micromanage the rules about how fast a griffon can climb, use this approach instead." You know, it's real simple for the OP to clarify if they want pure rules or advice, how about you let
them clarify
their question instead of just pushing
your agenda unremittingly? Thanks. —
mxyzplk ♦ 7 mins ago