Flight Build

I got Tsunami now, is it useful for my flight?
Don't know if i ever will breed an oogway...

And an other Question would you rather sell your intermediate skill chests for 3k or open it? I don't know what the update will be exactly but intermediate skills are more or less useless in my opinion, what would you say?

I got Tsunami now, is it useful for my flight?
Don't know if i ever will breed an oogway...

And an other Question would you rather sell your intermediate skill chests for 3k or open it? I don't know what the update will be exactly but intermediate skills are more or less useless in my opinion, what would you say?

Tsunami best on water, not on flight...
update is in a few days, patient...
u can sell for 3k after opening them so why not...

Is self sacrifice a useful skill?

I got Tsunami now, is it useful for my flight?
Don't know if i ever will breed an oogway...

And an other Question would you rather sell your intermediate skill chests for 3k or open it? I don't know what the update will be exactly but intermediate skills are more or less useless in my opinion, what would you say?

Tsunami is not very useful on Flight. As Ben suggested, really only use this with Water-type monsters. Juts save it for now if you don't have a good Water monster.

OPEN skill chests. ALWAYS. It is not worth selling them since you can easily get this, actually twice this, with just 1 team mode. Intermediate skills are definitely NOT useless. Firstly, weather-casting skills are Intermediate skills. Self-sacrifice is an intermediate skill. Meditation (as far as I know), along with Molten Core, is an Intermediate skill. There are numerous useful Intermediate skills. Don't give up on them!

Self-sacrifice is a pretty useful skill. However, most people try and go for Martyrdom. It is the Advanced version of Self-Sacrifice. Self-Sacrifice has 300 power and 95 accuracy while Martyrdom has 400 power and 90 accuracy. However, even at just 300 power, Self-Sacrifice is pretty powerful. I have it on one of my monsters and it is pretty useful as a last resort move, i.e. before you die or against a monster that your other attacks won't make a dent on. Do note that only Earth-types can learn Self-Sacrifice and Martyrdom. I suggest using Scythe with Resurrect for these moves as it will allow you to revive after using it.

Good luck!