Here is a guide to hold 4 1/5 darkrunes for repeatable shartuul events in 1 day
Darkrune 1: Turn in a Full darkrune for a crystalforged darkrune and keep it untouched
Darkrune 2: Keep a full darkrune in your inventory
Dark rune 3: Save up 5 darkrune fragments
Darkrune 4: keep a full darkrune in a gronk's grab bag
Edit: saw 3 threads that said matched my thread name and all 3 were different