Eater of Worlds
This item works as a mobile tnt source. First the C4 would be purchases from the demolitionist for 1G5S each and would have the same blast power as TNT and is classified as "ammo". The detonator would use C4 as ammo. The detonator would be purchased from the demolitionist for 10G. The way the detonator functions is it places C4 (Only one can be placed at a time) and when used again blows up the C4.