Core, p. 361-362 wrote:The Asuryani have practiced and honed their psychic abilities for aeons, and they are know well the dangers that lurk within the esoteric plane from which the energies that power them flow. Aeldari psykers are thus resistant to the predations of the warp, though due to the nature of their psyches and the deep way in which they experience emotions, when such psykers do fall victim to these dangers, it is even more catastrophic. If they use either a Minor Psychic Power or a power from the Runes of Battle Discipline, an Asuryani psyker may choose to reroll up to one 1 on the Wrath Dice in any Psychic test they make. However, should such a psyker still suffer a Perils of the Warp, they must roll two dice and keep the highest result for the first digit of the d66 roll (see page 48).
This entry is implying two different things:
1. Cited ability to reroll one Wrath Dice is a result of thorough training and as such belongs to Warlock archetype (and maybe to others Aeldari psyker archetypes we would have later). I belive such info belongs to Archetype entry though, but it's reasonable.
2. Still, this text said: "Aeldari psykers are thus resistant to the predations of the warp", implying it should be a thing for Corsairs (and, by the way, Dark Eldars, Harlequins and Exodites) as well.
Even more of that, description of problems with Perils is implying that this problem is linked to Aeldari psychophysiology.
So, how it's supposed to work?
(and I'd still like to hear official clarification about Smite, please)