Knight of Meditation, Mac Nessa (G-BT04/067EN)

[AUTO]: Forerunner (When a unit of the same clan rides this unit, you may call this unit to (RC)) [AUTO] Generation Break 1 (This ability is active if you have one or more face up G units in total on your (VC) or G zone) :[Counter Blast (1)] When this unit is put into the drop zone from (RC) for the cost of your unit's ability, you may pay the cost. If you do, choose one of your vanguards, until end of turn, it gets [Power]+5000, and"[AUTO](VC):When this unit's attack hits a vanguard, choose one of your opponent's rear-guards, and retire it.".