1: Since they are wyvern that spawn 8 increments higher than max wild level plus mutagen are so annoying to stock up, this is a Sanguine worthy creature however it requires some swift actions.

2: Sanguine cannot be consumed while floating, kite/bait your target of choice towards any location you can stand on the ground. Do not consume Sanguine before the stagger animation (regardless of blue flames) especially if you use automatic weaponry, as the animation is the trigger for starting taming sequence.

More Voidwyrm Taming & KO Tips