Certain set/legendary items have effects like "Soul Harvest gains the effect of every rune" or "Locust Swarm gains the effect of the Pestilence rune".
However certain runes (like Searing Locusts) change the damage type of that ability (from poison to fire, for example).
How do i choose which damage type my ability will inflict when i am using such items that "enforce" a certain rune (or all runes) upon that ability?
It is rather important since i have bonuses such as "20% increased poison damage" and i definitely need to make sure my abilities are of the proper damage type.
Sometimes it is beneficial to have a specific (skill menu) rune damage type active, while at others it is better to have an "enforced" rune damage type active while still having a certain other rune selected in the skill menu.