Houndoom with S/C worth powering up?

with the amount of people that will be in the raid you will be fine with watever u have now. save the dust for your mewtwo

It is 51k stardust and 44 candies, plus possibly a charged TM. You already have one at level 30, I would look at other good counters right now. Use this one at level 24 if you faint, etc

Stardust is to hard to come by don't power anything up but a Mewtwo and that is even a maybe.

Putting stardust into a Tyranitar would be better.

That depends on what other Mewtwo counters you already have, how many TM's and how much stardust you have. To give you an idea here are some numbers:
Level Move Dmg%
L30 Foul P. 100
L30 Crunch 93
L24 Foul P. 89.6
L24 Crunch 81.7

DO note that with level, surviveability increases too, but I did not make those calculations, you'd be gaining 19% damage if you level it up and change it's move, 11.3 from just level ing up and 7.9 from just the TM.

why be like all the others...an original houndoom is cool and that is a small dust investment to 30. (ps: dust is not harder to come by..it just takes more exponentally after 30 - chose well). worst case is he is a good gym defender and does not suffer the over 3k limit.