Another faction focus : Daemons !!
Khorne blesses his devotees with an increased ability to reap skulls in his name. These models charge up the table taking skulls for the Skull Throne with Unstoppable Ferocity, which grants them a bonus attack and a point of Strength in combat if they charge or are charged. This turns already formidable melee units into killing machines! Your Bloodthirster will be a king of melee when he charges, as he should be.
Tzeentch grants his minions the ability of Ephemeral Form, giving his Daemons +1 to their invulnerable saves. Wow, that’s good!
A Lord of Change with that boost will be quite powerful indeed, with a 4+ invulnerable save and SIXTEEN wounds!
Your opponents will come to fear not just the big models though, as even your basic Horrors have the ability to lay low even the mightiest of enemies with their psychic might.
Save some Reinforcement Points for Blue Horrors and Brimstone Horrors as well, as these still split out of their parent unit
They will almost always swing first in combat, even if they did not charge, due to their Quicksilver Swiftness special rule!
the Graceful Killers special rule grants them a bonus attack with their Piercing Claws (which are resolved at AP-4 when you roll a 6+ to wound!) allowing them to slice through armour in melee.
they will be taken for their ability to deploy near enemy models and engage them quickly, tying them up or simply getting in their way using their Mischief Makers special rule.
ignore wounds on a roll of 5 or 6!
Lot of good info !!