The following tool is for randomly generating gems for upgrades in your own Watchers in Death campaign.
Each model is limited to two gems per Weapon, two gems for Armour, two gems for Shields, and one Jewelery gem. Once a gem is equipped it cannot be removed without being destroyed.
...of Self Sacrifice (Jewelery): Once per battle, in your hero phase, you can call upon the power of this gem. All units (friend or foe, including the bearer) within d6" of the bearer suffer d3 mortal wounds (d6 mortal wounds instead if the unit has 10 or more models).
...of Extreme Health (Armour): +3 Wounds
Generate Another Gem
Generate Another 2 Gems
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Generate Another 5 Gems
Generate Another 10 Gems