Megacolony Battler+ "Type.N" (D-PR/763EN) [D Promo Cards]

[AUTO]:When this card is discarded from deck or hand other than during the battle phase, if you have a unit with "Megacolony Battler?" in its card name, COST [Energy Blast (3)], and call this card to (RC). [AUTO](RC):At the beginning of your battle phase, choose one of your rear-guards for every four cards in total with "Megacolony Battler?" in their card names on your (RC) or in your drop, and they get "Boost" until end of turn.