It has a miserable hitrate. But it's still a "oh, it landed, so I won" kinda thing.
The primary use is in Union events where the Union sets 100 Affliction buff, so Thor gets to like 90%+ Paralyze. Then you just solo whatever level you want.
And if you don't really have a preference and always want to play with elemental advantage, Water then? That seems to be your weakest element. However, there isn't a Fire event for the next three months, so there will almost be a new Miracle Ticket in time for the next Fire event...