Eradicator, Twin Thunder Dragon

[ACT](VC) Limit Break 4 (This ability is active if you have four or more damage):[Counter Blast (2) & Choose three cards with "Eradicator" in its card name from your hand, and discard them] Retire all rear-guards of all fighters, and if the number of retired units by this effect is three or more, this unit gets [Critical]+2 until end of turn.
[AUTO](VC):During your main phase, when your opponent's rear-guard is put into the drop zone, this unit gets [Power]+3000 until end of turn.