http://www.wardb.com/spell.aspx?id=8372
Here's what a zealot said about it over on WHA forums:
So where we have multiple tanks in PvE, the main tank might consider running this, while the off-tank runs shield wall.Srsly, the Chosen R2 morale is like 2x better then shieldwall..
You can place cordial on it at the last second and it will continue ticking for 2500 for another 15 seconds. It practically keeps the tank in a invulnerable state for 30 out of 60 seconds.
Also, in RvR, 300% greater heals is awesome. Shield wall will only block from the front. The increased heals apply to damage from any source. Obviously, you need your healers to be free to cast -- but multiple HOTs would tic for insance amounts. You would be nearly invincible for 15 seconds -- 30 seconds (as pointed out above) if HOTs are placed on you at the end of the initial 15 seconds. My cordial tics for 500+ -- so that's 1500+ per tic while this ability is up. From just one HOT, you can have multiple HOTs running. . . As for group heals, they would be 1000 * 3 or 3000 per heal, or direct "big" heals would be 1700 * 3 or 5100 per heal.
Pretty darn nice ability. I'd sat for group RvR our Chosen should run Morale 1 - Challenge; and Morale 2 - Tzeentch's Amplification. For keep defense you might trade the Morale 2 for shield wall.