Kill some easy risen Sellok Cultist along with Helvenn the Blighted (gives AA), then click on the book on the table near Helvenn. To exit the zone, click on the ceiling at ( -4, -46, -48 ) /waypoint -4.25, -45.79, -48.20. Careful: after you kill Helvenn the Blighted you'll have a 3 days lockout from the zone. Don't forget to click the book before zoning out.
Collect sundust from Antonica (common ground spawn, I found all updates not far from South Qeynos' griffin tower) and a sparking crystal from Butcherblock Mountains (in the water near the shore, quite easy to find if you start searching from the docks heading East) ( 469, 19, 501 ) /waypoint 469.41, 19.17, 501.18.
Return to Ilfanul.
Click on the rock at ( 771, 3, -708 ) /waypoint 771.01, 3.14, -707.97, you'll enter Ilfanul's Stand.
Kill aggro mobs all around (very easy), then speak to Ilfanul. More mobs will spawn while he performs the ritual, kill them all. Again, they're very easy.
When the ritual is over and you get the update, zone back to the Thundering Steppes and speak to Ilfanul again.