quick tip
if the blood of the dragon timer reaches over 21s (maybe slightly more depending on latency) after using wheeling thrust or fang and claw u should be safe to use geirskogul.
otherwise dont use it unless BOTD is about to come off cooldown
this is based on having the 2.4s gcd so u may need to adjust and play around with the times if ur not at the cap

hope this helps