Arsenal Spine

When Arsenal Spine dies, create two 1/1
colorless Krawler artifact creature tokens.
Morph {1}{w}{w}(You may cast this card face down
as a 2/2 creature for {3}. Turn it face up any time
for its morph cost.)
When Arsenal Spine is turned face up, destroy
target creature with power 4 or greater an
opponent controls.