Having just spent darts on Poseidon last week, I can tell you that I am quite happy with him so far. You have Joon, though, and I do not. They are comparable heroes, and I think there are a few threads comparing the two. You might search those out.
You do have a good array of healers, but I also know that 5-star healers are rare, so you might at least wait to see if any owners of Vivica drop by with impressions of her. She adds def and cleanse, but slow mana seems a really large drawback.
Some questions that might help clarify the situation a little further:
F2P, C2P, or P2P?
All snipers listed are maxed?
What are your game priorities (raids, defense, titans, etc.?)
What @Olmor said. If your Joon is already maxed I also vote for Viv. Poseidon and Joon are too similar unless you’re planning to use Poseidon as a tank (which Vivica can also do–arguably as well).
Plus, it’d be nice to have a 5* healer to go with the snipers you already have, and a yellow one for titans.
I’d say viv would be alot more usable for you. Her attack stat isnt far off of posiedons so not much of a loss on titans other than his skill. Decent tank especially on heal wars and will be on your main team for quite some time and quite a bit more survivable than your current healers.
I would ascend Justice. No one should love to have all of their heroes with 40% chance to miss hahahaha, also Justice do damage to all heroes too.
Just you have to know she has slow mana speed.
Thanks all for the insights… I think that for now I will go with Viv (I agree with poseidon being a little redundant with Joon)… And answering @Gallowspider, those Heroes mentioned above are all maxed already… out of all ascension material, darts are the hardest ones for me, so let’s see what happened when I can get another 6, if I’ll go with Poseidon or Justice like @HoRangYi suggested… (still have to understand G. Owl a little more) …
I would say either is good but me personaly would go poseidon. Your other healers mainly BT is fine so I would also suggest POS. You could wait for guin for ever and LOTS of $$$$$$ and still not get her, she is really only good for defense anyway. Offense will get you more in this game in my opinion.
I have the same problem, out of my 5*s most of them yellow, but darts are the rarest AM i get. Soon i will have 6, so i can ascend one of them. My candidates are: Justice (for paladin emblems), Inari, Joon (2nd one), Leonidas. I also have 30 tokens banked for sand empire, so if i get lucky and get Rana or the HOTM (wich i won’t because i did not get one in my last 300 or so pulls) they are also in play. I tend to give the darts to inari, any thoughts?