Unsurpassed Heavenly Impact, Ragreal D-BT03/007 RRR

[AUTO](RC):When this unit attacks a vanguard, COST [Counter Blast (2) & [Rest] any number of other rear-guards], until end of that battle, this unit performs drive check, and gets [Power]+5000. At the end of that battle, if three or less units were [Rest] for this cost, choose three cards from your hand, discard them, and if one or less units were [Rest] for this cost, choose two cards from your hand, discard them. (Drive check is performed after guardian's call)