Crimson Battler, 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](RC)[1/Turn]:When this unit attacks, or it becomes in the Link Attack state, if you have a grade 3 or greater vanguard with "Gao" in its card name, this unit gets [Critical]+1 until end of turn. [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)