Bloodwrack Medusa

Unit always strikes first
If the unit's Initiative is equal to or higher than the enemy's, he can re-roll failed misses when striking in close combat.

At the start of each Close Combat round, a unit that is in base contact with one or more enemy models that cause Fear must take a Leadership test, before any blows are struck.

To represent their fighting fury and lack of self-preservation instincts, Frenzied troops have the Extra Attack and Immune to Psychology special rules.

Re-roll Missed attacks during the first round of close combat against High Elves

Models with this special rule (but not their mounts) re-roll all To Wound rolls of a 1 when making close combat attacks.

Magical shooting attack with the Bloodwrack Stare profile

At the start of each Close Combat phase, before challnges are issued, enemy models in base contact with this model must pass an Initiative test or suffer a Strength 4 hit with the Killing Blow special rule. This is a magical attack.

Have the Stomp and Swiftstride special rule.
Needs only 3 units to form ranks and 6 to form a horde.