Shadow Cannon is a set of continuations found by westl from the first bag of Gull Wing TSD. The dependencies are I before S and J before Z, or if mirrored I before Z and L before S. It In the best scenario, it can achieve Perfect Clear after 8 lines which leads into a potential DPC loop or Perfect Clear after 10 lines. It can also be used as an Anti-Perfect Clear opener due to the fact that the first TSD can be built quickly, or simply an opener that sends a quick attack at the very start of the game, like Stickspin.

First Bag

First Bag

Residue

Setup rates are 43.33% on one side, or 57.22% when counting both orientations. This resembles the first bag of a TKI 3 Opening, except for the fact that the Z/S piece is placed vertically.

Continuations

Early Z/S Piece

I -> L

Second Bag

Residue

Third Bag

Third Bag

Residue

This can be stacked most of the time. It will fail if S comes before (or after) both L and J and T shows up early.