This description is the same as Death: Rider as of 7/31/07
No Rikti warriors are more feared than those known as the 4 Riders. Said to have suffered some strange transformation during the crossing between worlds, even their fellow Rikti are terrified of them. The Rider known as Toxic infects his foes, weakening them and their allies.
Here's what he says during the Repulse the Rikti Riders mission:
Combat start: Suffocate on: Vile Miasma.
At 75% Life: Will Create: World of Poisons!
At 50% Life: Nothing Resists: My Poisons!
Defeated: We Will: Regroup!