Dwarven Runes
Dwarves can use ylem stones to make small dwarven runes, with dwarven runic words etched into the stone. Unlike a traditional rune stone, these are much smaller and have very little real power. Instead they will have instant effects that are 20% as strong as the actual spell put into the stone. For example, you could make a dwarven healing rune that when placed on the head of the target would heal the target for 20% of what Essence Bolt would. Or perhaps a dwarven fire rune that when thrown at the target would do 20% of what firestreak would do.