I have a super weak SLSI as a HW to help out now and then in war. Is it worth finishing Burn and upgrading Explosives to place them around for others to detonate or should I just spend my cc on refills?

The wiki said there’s a chance when the opponent dies but is that the only time a non-burn hit can trigger them?

At this point it feels like refills and scratchers are a better investment of cc…