There are several kinds of weapons out there, some that are so deadly that they are never seen by the public eye. This one should have remained hidden. The Twin Sabre; This missile is extremely deadly, it is armed with 24 blocks of TNT and can dig into a wall that is 3 blocks thick before detonating. Also, it can actually function as 2 separate missiles, so if one half gets disabled, the other half will keep going until it reaches its target.

Survival Tips: Remember that even though it functions as 2 missiles, both sides have the same weak points. So if you find it, aim for that place on the second half to completely disable it! Remember that it has very few areas where the TNT will just stay on the missile when ignited, try to aim for the TNT on the top, it will take both sides out no matter what, keep it away from any weak points, it will destroy the portal if it gets to those said weak points, there won't be a chance to recover from a blast like that! And one more thing, destroy that thing on sight, it is the most deadliest missile in Minecraft period.