use him for a lot of content at the start yes. So he is worth it (Fireknight, Spider for example)

I would keep him, good chance you'll find a use for him.

Please take this all with a grain of salt, though. Armiger has specific uses. For those specific uses he is good, mainly because of how cheap it is to upgrade him.

But he is not an all-around useful champ. He's completely useless in arena and as a campaign farmer. For dungeons, he is marginally useful on FK and spider, mainly because of his TM control and max-HP damage abilities.

You'll get plenty of him from shards. If you've booked him, ascended him, or have put masteries into him, then keep him around. But otherwise, you'll probably find more value getting your Galek to 6*. You can always get more of him later if you find you need him.

Disagree.  I would use Galek as food before armiger. Armiger is fabulous in:

Spider

FK

Doomtower

FW21

I don't think there is a more valuable f2p champion.  I have 2 at 6stars.  Armiger is an end game champ whereas Galek is arguably the worst of the starters with no end-game viability in any area that I am aware of.

I see it more from the perspective of general advancement. If the OP is relatively new, getting brutal 12-3 or 12-6 on auto is more important for overall progression than being able to do those other things you mentioned.

Armiger can be obtained at any point, really. You'll get plenty from gems, and from the marketplace.

Ok, so I should sacrifice hime?

And another question, how many uncommons do I need as food to push my Galek to 6*?

Galek is the worst choice when you choose your starting champ. Armiger is much better than Galek. 

However when people telling you this and that, it does not mean you could do as they did, like Armiger, I built 3 but never use them at all. As new change, Armiger and other [Enemy Max HP] attack could become less useful. 

What I think is you could ignore both Armiger and Galek, pull more shards to find better champs to invest in. 

You need five 5* champs to go from 5* to 6*.

As for whether you should sacrifice him or not, I think you have some good opinions in this thread. It's your decision in the end.

With respect to what Indent said - Galek is indeed the worst of the starters, but he's still better than just about any other rare for campaign farming. And getting brutal 12-3 or 12-6 on fast auto farm is critical for your overall progression in the game.

If you'd like, you can paste a screenshot of your current champs - possibly you have some epics that would do better to level. You can also consult Raid Shadow Legends List of Champions by Ranking | AyumiLove - could help you make decisions. 

No, I mean how many 2 stars because u need 3 two stars for a 3 star and 4 3 stars for a 3 star etc

and i mean like icluding the champ ur upping like if u want to up galek u need 6 5 stars including galek so galek + 5 5*stars

I'm afraid I still don't understand your question.

Are you asking how many uncommons you'd need in total to generate five 5* champs so that you can get Galek to 6*?

If so, you can basically just do the math recursively.

To generate five 5*, you need five level-40 4* and (5 * 4) = 20 level-1 4*, for a total of (5 + 20) = 25 4*s.

To generate twenty-five 4*, you need 25 level-30 3* and (25 * 3) = 75 level-1 3*, for a total of (25 + 75) = 100 3*s.

To generate 100 3*s, you need 100 level-20 2*s and (100 * 2) = 200 level-1 2*, for a total of 300 level-1 2*s.

regarding armiger, he is spread around inside the campaign as an opponent, see what you think of him from that point of view.

yes lol thanks

yesterday my brain was mush (still is)🙈 thanks

Armiger is useful in end game for two reasons:

1) A1 turn meter reduction on crit hit

2) A2 block revive and Enemy MaxHP

Especially useful in Doom Tower.   Galek sucks mid/end game.

Whenever these people are telling you that Armiger is way more useful end-game, remember that they mean end-game.  I took one to 5 stars and tried to use him in some teams but he is not very good for progression (even in the dungeons where he shines late game).  Since he is so absurdly easy to get (assuming you get mystery shards from the shop and open a lot of them like I do), you can build him later when he'll be useful to you.