Blue Sky Knights, Drum Bunker Dragon

<Dragon World> [Call Cost][Pay a gauge & put the top card of the deck or a card from drop into this card's Buddy Soul] [AUTO]:If your vanguard is "Mighty Sun Fighter, Gao Mikado", this cost is reduced by [Counter-Blast 1]. When this unit is placed on (RC), [COST][Counter-Blast 1], and draw a card. [AUTO](RC)[1/Turn]:When this unit attacks a grade 3 or greater vanguard, put the top card of the deck into gauge face down or [Soul-Charge 1]. [CONT]:[Soulguard] (When this unit would leave a (RC), you can put a card from this unit's Buddy Soul into drop to have it stay on the (RC)