Summoners War: All Possible Secret Dungeons

I found this list on a forum while I was surfing the inter-webs.  I am posting it here because I can guarantee this post will not disappear randomly, which i cannot say the same about forum posts.  I also didn't like the format that the information was presented in.  I took the information in the forum post and converted it into something much easier to read quickly.

Let's start with the most important information first:

No SD

Name	Fire	Water	Wind	Light	Dark
Fairy		X
Garuda			X?	X
Harpu		X
Inferno	X			X	X
Inugami	X	X	X
Magical Archer				X	X
Warbear	X?	X
Werewolf				X	X

2**

Name	Fire	Water	Wind	Light	Dark
Fairy			X		X
Garuda	X	X			X
Harpu	X		X
Hellhound		X	X	X
Howl	X	X	X	X	X
Imp	X	X	X	X	X
Pixie	X	X	X	X	X
Salamander		X	X	X	X
Warbear			X		X
Vagabond		X	X
Viking		X	X	X
Yeti	X	X	X	X

3***

Name	Fire	Water	Wind	Light	Dark
Bearman	X	X	X	X	X
Fairy	X			X
Golem		X	X
Griffon	X	X
Harpy	X	X			X
Harpu				X	X
Hellhound					X
Inferno		X	X
Inugami				X	X
Magical Archer	X	X	X
Salamander	X
Serpent	X	X	X
Warbear				X
Werewolf	X?	X	X
Vagabond	X			X	X
Viking	X				X
Yeti					X

OTHER VALUABLE MINIONS


Elemental DARK (not high elemental, not low elemental) - dark/light scroll / wish temple
Epikon Priest ALL - mystic scroll / wish temple / unknown scroll
Fairy LIGHT - invite 50 friends by facebook / Secret dungeon

Farmable Monsters:

Inugami FIRE - Faimon Volcano / Unknown scroll / Mystic scroll
Inugami WATER - Garen Forest /Unkown scroll / Mystic scroll
Inugami WIND - Telain Forest /Unkown scroll / Mystic scroll
Inferno FIRE - Vrofagus Ruins / Unknown scroll / Mystic scroll
Warbear WATER - Mt. White Ragon / Unknown scroll / Mystic scroll
Werewolf FIRE - Vrofagus Ruins / Unknown scroll / Mystic scroll
Grim Reaper WIND - 1st new area 10/28/2014 / Unknown scroll / Mystic scroll

Other 4*, 5*, 6* monsters can be summoned by mystic scroll, summon by crystals, event dungeons, wish temple ?
Other light/dark monsters can be summoned only by light/dark scroll or wish temple.

Credit for this information is to com2us forum member "rzechu".

Here is the original forum post for credit as well.

If you know about a secret dungeon that is not in the list above, leave a comment below so that I can update this information.

*** 10/28/2014 Update ***

The four new campaign areas that opened up today will allow for more farmable monsters.  I will update as soon as I have unlocked them all.