:When this unit attacks a vanguard, if you have a vanguard with "Dueling Dragon" in its card name, this unit gets +2000 until end of that battle.
( in the right column of the front row):When this unit attacks a vanguard, if you have a vanguard with "Dueling Dragon" in its card name, and you have a unit named "Stealth Beast, Stab Fang" in your left column, this unit gets +5000 until end of that battle.