Dragwizard, Knies

Ritual 3 (Active if there are three or more grade 1 cards in your drop zone):When this unit is placed on from your deck, this unit gets +2000 until end of turn. (Active if you have one or more face up G units in total on your or G zone):[ 1 & Choose one of your other rear-guards in the same column as this unit, and retire it] At the end of the battle that this unit boosted ([Boost]), you may pay the cost. If you do, draw a card.