I've a feeling that's not your full roster. Who else have you got?

Nobody stands out as an obvious 2nd but Artak should definitely be the 1st one done.

If no one stands out, don't rush to 6* medicore champs as you could pull something very strong at any moment. I think there's a 2x ancient shard pull next weekend, which could give you some decent epics and even a legendary or two if you're lucky.

In the meantime, leave your food aside and keep farming and be patient for whatever comes along. 

2c. :)

Royal guard has value and is worthy of building, but like others are saying, you should probably wait for someone new for your second pick.

RG does have quite high gear requirements to really shine, by the way, but skills that do damage according to enemy max hp are usually pretty decent.

Perhaps watch a youtube video about him, and see what you think.

Royal Guard and Tyrel if you want to ugrade characters (mybe thets two the best option here), but my advice, wait for better options, maybe you pull a godd hero at weekend when start the ancient 2x event.

artak 100%

Artak is already 6* so I'm guessing he isn't on the consideration list. My guess is he is asking who next to take to 6*. To which I repeat my original point - show us the rest of the roster.

Barring any champs hiding I think I'd prefer to wait on more 6*s. 

ah just assumed he wasnt 6 star when he wasnt max level, in that case just wait.