Commander of Argus #1 (Antoran Wastes)

I have finally completed the achievement Commander of Argus - complete the following special encounters on Argus. 

There are 60 rare-elites to find and kill.  Some of them drop special items like mounts, toys and pets. Most of the elites are rare spawns for normal world quests, but there are also a few more complicated ones requiring collecting things or a group.  Here is a list of the elites from Antoran Wastes and the other items you can collect from them.

Crimson Slavermaw, dropped by Blistermaw

Antoran Wastes

   Admiral Rel'var

   All-Seer Xanarian
   Blistermaw - Crimson Slavermaw (mount)
   Chief Alchemist Munculus
   Commander Texiaz
   Doomcaster Suprax - Legion Communication Orb (toy) *1
   Gar'zoth
   Houndmaster Kerrax - Vile Fiend (mount)
   Inquisitor Vethroz
   Lieutenant Xakaar
   Mistress Il'thendra
   Mother Rosula - Biletooth Gnasher (mount) / Rebellious Imp (pet) *2
   Puscilla - Biletooth Gnasher (mount)
   Rezira the Seer - Sightless Eye (toy) *3
   Squadron Commander Vishax - S.F.E Interceptor (toy) *4
   The Many-Faced Devourer - Uuna's Doll (item) *5
   Varga - Fel Spotted Egg
   Ven'orn
   Void Warden Valsuran
   Vrax'thul - Biletooth Gnasher (mount)
   Watcher Aival
   Worldsplitter Skuul
   Wrath-Lord Yarez - Micro-Artillery Controller (toy)

*1 Doomcaster Suprax

 

This rare is located in the north of Antoran Wastes at the Alter of Darkest Rites (58:12).  There is a large purple rune on the ground and three runes surrounding it.  To summon him three players must stand on the runes.  There have been reports that sometimes it is bugged and if you mount up you can run over all three runes fast enough to summon him, though this did not work for me.  Also some people have had luck using a battle pet on a sledge on one rune and hunter or warlock pets are supposed to work too.  Once summoned just kill him quickly using the Warframe.  He has a chance to drop the toy Legion Communication Orb (allows you to see far into the distance and grants the ability to summon beacons there to attract Legion forces).
UPDATE: after the launch of BfA it seems you can now solo summon this boss, I did it twice running over only 1 rune and dropped the toy on my second try so very happy :)

*2 Mother Rosula
This rare is located in the imp cave in the north of Antoran Wastes (entrance 65:26).  Collect 100 Imp Meat from Felspawn Imps and make a Disgusting Feast.  Use the Disgusting Feast in the cave and place it near the fish bones and her fel pool to summon her.  She can drop both a mount, Biletooth Gnasher, and a pet, Rebellious Imp.

  
*3 Rezira the Seer

You can reach this rare using the Observer's Locus Resonator which creates a portal to the  balcony where he resides.  This can be purchased by completing the quest Yet More Intact Demon Eyes using 500 Intact Demon Eyes (see post: Intact Demon Eyes).  He drops the toy, Sightless Eye (makes you very difficult to detect for 10 min)

*4 Squadron Commander Vishax

Squadron Commander Vishax

You must combine a smashed portal generator with a conductive sheath, an arc circuit and a power cell to repair it and gain access to Vishax.  First go to Terminus to the south of Antoran Wastes.  The smashed portal generator is looted from Immortal Netherwalkers, once you have this you can loot the other three items from Eredar War-Minds and Felsworn Myrmidon.

Click on the smashed portal generator to repair it.  This will launch a quest Commander on Deck! - use Vishax's portal.

The portal is located on the docking station for the large Legion ship (77:74).  Go onto the docking station and turn right, at the end you will see the stand to summon the portal. Once through the portal you will find Vishax, he can drop the S.F.E. Interceptor toy.

S.F.E Interceptor toy

*5 The Many-Faced Devourer
To summon him first you need to loot the Call of the Devourer scroll from mobs in the Scavenger's Boneyard. Then you must collect three bones.  Place the bones on the bone pile (54:39) in the Scavenger's Boneyard to summon him.  He has a chance to drop Uuna's Doll, an item which summons Uuna's ghost and starts the quest line to get the pet, Uuna. 

(See post: Uuna's Story: Part #1 - finding Uuna)

See upcoming post... (Commander of Argus #2 and #3)