GROUNDSHAKER SHELLS

Use this Stratagem in your Shooting phase, when
selecting a target for an 'eavy lobba. Until the
end of the phase, each time that model makes a
ranged attack, if a hit is scored against a target
that is not TITANIC and cannot FLY, then until
the start of your next Movement phase, halve
the Move characteristic of models in the target
unit and subtract 2 from the result of Advance
rolls and charge rolls made for that unit.