I recently reread blast, and I think we've been playing it wrong.
We've played that you always need three advantage to trigger blast, whether you hit or not.
But the rule actually only says three advantage triggers blast on a miss.
''If the attack is successful and blast activates, each character engaged...''
This implies you trigger blast seperately from a successful hit, but nowhere does it say what is needed. This makes me think the ''and'' in the above sentence is a typo.
Does blast always trigger on a hit and you also have the option of triggering it on a miss with advantage? It actually kind of makes sense this way. Certainly makes thermal detonators much much more scary. The way we were playing it only truly sucked if you were directly hit or blast was triggered. If it triggers automatically it makes grenades much better.
Edited by BadMotivator