You gain the ability to enchant a gem with a spell from your prepared spell list.
Once per day you can choose to attempt to enchant a gem with one of your spells. You must expand a spell slot of the level being enchanted.
Gem required to enchant
Level 1 to 5 - (10g X spell level)
Level 6 to 7 - (100g X spell Level)
Rolls for success of enchantment.
Roll 1d20 + one stat modifier (Int Cha or Wis)
Nat 1 spell targets caster
2 to 10 gem fails to be enchanted and can not be used again for 2 days.
10 to 20 gem is enchanted with spell
20+ add 1 extra damage dice or add 1d4 duration to spell
Nat 20 add 2 extra damage dice or add 2d4 duration to spell.
Once enchanted the gem is marked with a symbol for front and back.
Use of gem
Make a 1 stat check of following Int, Cha or Wis dc10 to use gem. Once gem is attempted to be used the gem loses the spell and cannot be enchanted again for 1d4 days. On a Nat 1 spell targets user.
Must follow the usual cast requirement for distance. Spell will originate from front mark of gem.
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