How many dryads/alarunes do you guys recommend having?
I got a ton when I was doing my 50+ Expert Wind dragon mech runs.
I can't imagine too much since it pretty easily the worst healer character in the game. Terrible active skill and mediocre RCV for a healer. Even Angel at least have that high RCV and a much better heal skill.
I'm think of just keeping one and feeding the rest to that one.
Anyone know of some party where you need multi dryads/alarunes?
Honestly, none. Unless you want one for completionist's sake. Even in an all-green team, I'd rather have Siren. I'm holding onto an Alraune, but I don't bother leveling it up or feeding it RCV bonuses. Same with Archangel. In fact, I'm only holding onto them in case they ever get another evolution in a later update. They're already in my Monster Book so I don't need them for collecting purposes anymore.
Why would you do that, light/dark seems much better... Double light/dark resist AND more damage. (I have a second Hades so my second one will be dark/dark anyway)
There's pros and cons for both sides. As ToxicAdam said, a Light/Dark combo resist monster can get element bound in either Light or Dark technical dungeons. But, otherwise, dual resists obviously offers more flexibility and more offensive power. I used to be a proponent of dual element resist monsters, but after extensive play I've come to realize that technical dungeons are the hardest dungeons in the game, so if you can have one version of a monster I'd rather have the one that would be most useful in technical dungeons. And that's the mono-colored resist monsters. Of course if you were in a Light/Dark combo dungeon, the dual color resist would be better, but those are the rare exception. Plus the mono/mono color resist monsters offer 60% resist instead of 50%, so dual leaders would reduce damage to 16% instead of 25%, which is huge in Legendary tech dungeons. A 48,000 damage special attack would be reduced to 7680 damage vs 12,000 damage. This is also why I love the underrated Venus. She offers the Light/Light resist to complement Hades' Dark/Dark resist.
Of course, ideally I want both. But my current stance is I'd rather have the mono-color if I could only have one. Stupid me fused an extra Ceres and Venus, not realizing they had 2 different ultimate evolutions. Gonna be trying to get them again on the 28th.