Mystara of the Five Spheres RPG - Weapons Mastery - Simple Two-Handed - Greatclub Page

• A club requiring two hand to use.
• 5E Stats – One Handed Simple Weapon, Costs 2 sp and has a weight of 10 lb.
• Weapon Options (Available to learn) – Bruising Blow, Crushing Blow, Hurling Impact, Ribshatter, Sunder Joints

Weapons Mastery – Greatclub
• Weapon Mastery Non-Proficient – Attacks are with disadvantage, and damage is halved rounded down. Non-Proficient use does not grant access to most of the weapon special properties. (Non-Proficient)
  Greatclub Attack +Str to hit one target
  Basic Hit: 1d8+mod bludgeoning (Halved)
  Weapon Abilities – Two-Handed
• Weapon Mastery Proficient – This is the standard weapon stats from sourcebooks. (Proficient)
  Greatclub Attack +Str + Prof to hit one target
  Basic Hit: 1d8 +Str mod bludgeoning
  Weapon Abilities – Two-Handed
• Weapon Mastery Skilled – Weapons do an extra dice of damage. Gain abilities to activate as a bonus action on your round, or a reaction. (Skilled)
  Greatclub Attack +Str +Prof to hit one target
  Basic Hit: 2d8 +Str mod bludgeoning + Stun
  Weapon Abilities – Base DC, Defensive, Deflect, Stun, Two-Handed
• Weapon Mastery Expert – You gain an expertise on your attack, and weapons do an extra dice of damage. Abilities with weapons improve. Can use weapon options with this weapon. (Expert)
  Greatclub Attack +Str +Prof +Prof to hit one target
  Basic Hit: 3d8 +Str mod bludgeoning + Stun
  Weapon Abilities – Base DC, Defensive, Deflect, Stun, Two-Handed
  Weapon Options (Available to learn) – Bruising Blow, Crushing Blow, Hurling Impact, Ribshatter, Sunder Joints
• Weapon Mastery Master – Your gain advantage on your attack, weapons do an extra dice of damage. Abilities and Options improve. (Master)
  Greatclub Attack +Str +Prof +Prof to hit one target
  Basic Hit: 4d8+mod bludgeoning + Stun
  Weapon Abilities – Base DC, Defensive, Deflect, Stun, Two-Handed
  Weapon Options (Available to learn) – Bruising Blow, Crushing Blow, Hurling Impact, Ribshatter, Sunder Joints
• Weapon Mastery Grand Master – A natural 1 counts counts as a critical hit, and if both dice deal a critical hit, then all dice in the attack are maximised. Weapons do an extra dice of damage. Abilities and Options improve. (Grand Master)
  Greatclub Attack +Str +Prof +Prof to hit one target, Crit (1 or 20)
  Basic Hit: 5d8 +Str mod bludgeoning + Stun
  Weapon Abilities – Base DC, Defensive, Deflect, Stun, Two-Handed
  Weapon Options (Available to learn) – Bruising Blow, Crushing Blow, Hurling Impact, Ribshatter, Sunder Joints
• Beyond Grand Master in Weapon Mastery – While not possible to learn at this level, some abilities and magical items might push skill above grand master, and if it does it adds an extra dice of damage and improves abilities and options as per the weapon progression.

Design Details - I have changed the base damage so to does less and is harder to hit things without proficiency. Not as overpowering as the original weapons mastery, but the hit points are also not as high, and with magical enhancements I did not want this weapon to become the must have item on the shopping list to enhance to a +3 weapon.

Weapons Mastery Version 1.0
• Greatclub Attack: (Non-Proficient) + to hit, Two-Handed, one target
  Hit: 1d4+mod bludgeoning.
• Greatclub Attack: (Proficient) + to hit, Two-Handed, reach 5 ft, one target
  Hit: 2d4+mod bludgeoning.
• Greatclub Attack: (Skilled) + to hit, Two-Handed, one target
  Hit: 3d4+mod bludgeoning.
  Crit: Stun (Base DC) Con save or stunned for 1 round per every 5 the check failed by.
  (B) AC Defence (+1/1) – You gain an armour class bonus, for a set number of attacks each round.
• Greatclub Attack: (Expert) + to hit, Two-Handed, one target
  Hit: 2d6+mod bludgeoning.
  Crit: Stun (Base DC+1) Con save or stunned for 1 round per every 5 the check failed by.
  (B) AC Defence (+1/2) – You gain an armour class bonus, for a set number of attacks each round.
  (B) Deflect (1) – Before an attack is made you can choose to deflect several attacks instead using your attack roll instead of your AC if higher.
• Greatclub Attack: (Master) + to hit, Two-Handed, one target
  Hit: 2d8+mod bludgeoning.
  Crit: Stun (Base DC+2) Con save or stunned for 1 round per every 5 the check failed by.
  (B) AC Defence (+1/3) – You gain an armour class bonus, for a set number of attacks each round.
  (B) Deflect (1) – Before an attack is made you can choose to deflect several attacks instead using your attack roll instead of your AC if higher.
• Greatclub Attack: (Grand Master) + to hit, Two-Handed, one target
  Hit: 2d10+mod bludgeoning.
  Crit: Stun (Base DC+3) Con save or stunned for 1 round per every 5 the check failed by.
  (B) AC Defence (+1/4) – You gain an armour class bonus, for a set number of attacks each round.
  (B) Deflect (2) – Before an attack is made you can choose to deflect several attacks instead using your attack roll instead of your AC if higher.