
Generally speaking, 3* is relatively easy to get in titan events, but I *usually* wouldn't push for the 5* unless I'm sure I'm gonna be using them right away, or I've got a good enough resource hoard on hand that I'm not worried about running short for the next fusion
A2 aoe ignore block damage and unkillable, bonus damage for debuffs on each enemy
A3 def down, block passive, then debuff spread, then aoe hit
Big time arena champ, also for sin city/grim forest/hard FW waves.
That a2 bonus damage per debuff might also make him a good boss killer in the right comp
As a daily player, I don't consider Titan Events to be too difficult to grind out, and the last page has pretty serious rewards. Not a whole lot different than doing a fusion, with the exception of the typical "gotcha" of hiding 150 points (or more) in a Deck of Fate.
This time, there is a Skull of Treason at 1000 points, and that should be a bit of extra enticement unless you were fortunate enough to nab a few last time around.
I haven't used yet except a quick fw build. Haven't geared hilvi or noelle/Santa either. Shocking I know lol
I use Nick/Noelle regularly. I built them primarily for Sacred Order Only Siege, but have gotten very good use out of them against the crazy passives that are the new norm.
As for Hilvi, I have only bothered to gear Hilvi for HFW and my Tormin still wears an old hand-me-down set of clothes.