The Double Blast Rune will work with all types of exploding shields.
No, only Explosive Shield (blue version). Lethal Barrier (white version on Tarand/Sage) has a Lethal Barrier Double Blast Rune.
Only Explosive Shield! You are so fast forScience
What is this a question or a guide
It sounded more like a question, even though there wasn’t a question mark…
Moved in General Discussion.
Closing as this has now been answered.