Natsu has a final showdown with Jackal, who turns himself into a human bomb at one point! Later, the other teams arrive too late, finding the other former members they're meant to protect already murdered by Tartaros...
It's a super-powerful magic cannon 
that can target an entire continent.
إنّه مدفعٌ سحريّ جبّار بوسعه أن يستهدف قارّةً بأسرها