It’s alright. Much better than the second form, that’s for sure. But the in this case the normal Torrentide is much better.
no. torrentide shiny is pretty weak. its alright with other mark monsters to support it. pretty much unusable in pvp.
Exu and Eklypz are right, while the normal Torrentide is awesome in looks and moveset for PvE and definitely one of the best super epics in the game, the shiny version is just not worth to evolve if you don’t have the ingredients loose.
Like Eklypz said, maybe if you want to play his mark skill with other mark monsters that you got by chance.
I have no idea what ingredients he needs to evolve, but if he needs the Alterramid like most (or all?) shiny monsters, better save it for Shiny Spectrefox or other shiny monsters coming into your account soon. And evolve him later, once you have many to spare.
But better decide by yourself:
For reference: Shiny Torrentide’s Slayerbane cannot OHKO Albakhan with Slayerbane, despite elemental advantage