User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-26421638-20150522144259/@comment-4969421-20150524065513

Teostra's supernova is technically the most predictable attack in the whole game, so it is not BS. Just count up to 100, or use a Wystone. If you manage to mount Teostra, or cut its tail or horns, start again. Around 90s or so ping your friends so they can get away. In G Rank, the Teostra will sometimes use the ranged nova attack more often before using the supernova. And even if you lose the count, you can still get out of the way. I've avoided supernovas by just backhopping three times with a Lance, so it is definitely possible.