Changes & Tweaks:

狂暴 Wither Skeleton

Spawns as a group of 5:

•  Captain ×1
• Lancers ×2
• Archers ×2

All melee attacks inflict Wither I (5s)

When the Captain dies:

• Remaining soldiers gain Weakness I
• Gradually accumulate Slowness
• At Slowness VII they enter an Exhausted State
• In this state:
  • Cannot move
  • Can be recruited using a Soul Command Token

If the Captain is the last survivor:

• Strength I
• Speed I
• Max Health increased to 50
• Fully heals instantly
• Loses 1 HP per second
• If killed while in this state and the player dealt ≥20% damage:
  • Drops “Indomitable Will”

Captain

• Health: 30
• Armor: 15
• Damage: 8
• Command Ability:
  • If a player within 32 blocks attacks any mob, or holds a weapon,the Captain marks them as hostile and issues an attack order:
  • Captain and squad gain:
    • Speed I (3s)
    • Strength I (3s)
    • All members focus the same target

Lancer

• Health: 20
• Armor: 10
• Damage: 6

Archer

• Health: 20
• Armor: 10 
• Ranged Damage: 4.5
• Flaming arrows
• Fire Rate:
  • Distance > 12 blocks: every 3 seconds
  • Distance ≤ 12 blocks: every 1.5 seconds

New Items

不屈 Will

• Rare material dropped by the empowered Captain.

召魂 Token

• Durability: 4
• Used to recruit exhausted Brutal Wither Skeletons

沉舟 Banner

In Inventory : player and pet within 16 blocks gain : Strength I

Active Use : 

Level scales with brutal souls in inventory:

• Up to 16 souls counted
• Starts at Level 1
• +1 level per 2 souls

Duration: Level × 6 seconds

Grants to player and nearby pets:

• Speed II
• Strength (Level/2)
• Regeneration I
• Resistance II
• Hunger III

 Aftereffects :

• Banner breaks after use
• When the effect ends:
  • Weakness III (Level × 4s)
  • Lose Level × 11% of current HP

 Others Changes:

• Default value of mob special spawn chance gamerule set to 1
• Optimized soul consumption for the Shining Scythe
• The Death reduces hitbox hieght when obastructed
• The Death immune to effects