Revenant Horror

 is a Slayer Boss in the Zombie Slayer branch. It cannot be damaged with bows, as it heals when it is touched by an arrow. It is also immune to potion effects. All of these features make it a bit harder to defeat.

Each tier has all of the abilities from the one before it.

Drops
Here is a list of all of the items that have a chance to drop from the boss. The odds of getting the drop and the quantity of each item is provided below.

Minibosses
The following Minibosses have a chance to spawn when you kill a Zombie while a Revenant Horror slayer quest of or more is ongoing. These Minibosses provide more combat experience and Zombie experience than naturally spawning zombies, therefore speeding up the process to spawning a Revenant Horror. It is also possible that after killing one of these Minibosses, another one could spawn immediately.

Tips
Show/Hide List of Tips
 * Before doing a higher tier for the first time and that you are not confident that you can beat it, you should use Potions like Strength V, Critical III, and Regeneration VII.
 * Any of the Dragon Armors reforged to Pure or Fierce are recommended options if you're looking to take down a Revenant Horror
 * For the Revenant Horror, using a Revenant Armor with any kind of zombie helmet (Zombie's Heart, Crystallized Heart, Revived Heart or Reaper Mask) or Strong Dragon Armor or better armor set, with a max enchanted Reaper Falchion will help immensely.
 * If it gets enraged, fleeing briefly is an option if your gear isn't the best.
 * Against the Revenant Horror, if your Revenant Armor has at least 200 per piece (from the Zombie Bulwark Ability) and you can deal 30k damage per strike, you can tank it very well when combined with the usage of the Life Steal enchantment.  Even while it is enraged, you might not even need Potions. (This tip may be outdated.)
 * If you or the boss stays on the same block space for too long, it will result in you taking True Damage and massive knockback from the boss (+ only).
 * Trapping the Revenant Horror in a lift in the Deep Caverns can make the fight a lot easier. Additionally, spawning the boss in the Diamond Reserve or Obsidian Sanctuary and luring it into lava can hugely reduce the Revenant Horror's mobility and prevent it from landing hits on you, however be aware it can still use Life Drain which can drain your from a distance.
 * IMPORTANT: As with all slayer bosses, the Revenant Horror has a passive ability; if it doesn't damage you for a while, it will rapidly start to regenerate health. Make sure it can attack you, otherwise you will have a harder time trying to take the boss down.
 * If you're attempting a Tier III+, you should have good healing accessories / support items such as, Radiant Power Orb, Wand of Mending etc.

Trivia

 * There are leaks for a Tier 6 Revenant Horror and a Tier 7 one, each being called the Revenant Shredder and Revenant Warden. The Shredder has 4.2 Million HP and the Warden has 7.2 Million. Those are part of the Slayer v2 Update, which was rumored to be canceled.
 * Because it's immune to arrows, it is also immune to the effects of Voodoo Doll and will not be affected by the damage over time debuff.
 * Tier V Revenant Horror, unlike the lower tiers, is immune to ranged and magic damage.