TREMOR SHELLS

Use in your Shooting phase, when selecting
a target for a Thunderfire Cannon model.
Until the end of the phase, each time TFC makes
a ranged attack, subtract 1 from that attack's
wound roll, and, if a hit is scored against a target
that is not Titanic or Fly, then until
the start of your next Movement phase, halve the
Move of models in the target unit and subtract
2 from Advance and Charge rolls made for
that unit.