The Ynnari are still a new army in 40k, and today the Warhammer Community is taking them forward to 8th edition, and showing us what we will find there.
via Warhammer Community
https://www.warhammer-community.com/2017/06/09/warhammer-40000-faction-focus-ynnari/
The Ynnari represent hope for the Aeldari. By harnessing the power of death, they have brought a renewed sense of purpose to their dying race. But how will they fare in the new Warhammer 40,000?
Previously, Ynnari created quite a splash in the Warhammer 40,000 world for their incredible ability to enable units to act multiple times in the same turn. Wraithknights doing anything twice was incredibly potent. When backed by the rest of the hyper points-efficient Aeldari faction, you had a powerful combination.
In new Warhammer 40,000 Ynnari are still a force to be reckoned with but have had some sensible limitations placed on them. Their signature ability, Strength from Death, now only works on Infantry, Bikers and the Yncarne (sorry Mr. Wraithknight). What it does allow you to do, though, is incredible. Each time a unit is completely destroyed within 7” of one or more units with this ability – except in the Morale phase – pick one of those units to make a Soulburst action. These allow you to move, cast a psychic power, shoot, charge or fight. Pretty spectacular.
They also allow you to form an army from multiple Aeldari sub-factions and use the Ynnari keyword instead. Only the Haemonculus Covens are excluded from joining the Ynnari. Lastly, Ynnari characters can ride in other Aeldari transports – which is quite good, as they all have access to some excellent methods of transportation.
The ability to pick such a wide variety of units is the real strength of this faction. You can make a lore-accurate army, for example, comprised of Fire Dragons, Incubi, and Harlequins. This immense flexibility gives you all of the tools you need to build a well rounded and deadly force.
One of my favourite combos is to use the Word of the Phoenix psychic power on a unit that has already moved to let it Soulburst and move again to get in position to either shoot or charge. With the speed of most Aeldari units, this gives a massive threat bubble. If you position a supporting unit well, if the first unit destroys their target, the support unit can then soulburst, too. This cascading effect can create utterly lethal combinations.
Ynnari will be a popular flavour of Aeldari in new Warhammer 40,000 and continue to provide incredible force multiplication capabilities.