Add 1 Level 4 or lower Fiend monster from your GY to your hand, or if you control "Red Dragon Archfiend" or a Synchro Monster that mentions it, you can add 1 such monster from your Deck instead. At the end of the Damage Step, if your "/Assault Mode" monster or "Red Dragon Archfiend" attacked: You can banish this card from your GY; the attacking monster can make a second attack in a row. You can only activate 1 "Crimson Call" per turn.