Takahashi Bebebebe, No Regrets about This Birth

[ExplosiveGrowth] - Grade 0 normal unit with "Bebebebe" in its card name (You may place it by stacking it on the specified unit instead of normal calling it to ) :When this unit in the [ExplosiveGrowth] state attacks a grade 3 or greater vanguard, if you have a vanguard with "Bebebebe" in its card name or CoroCoro  , this unit gets +10000 until end of that battle, 1, and this unit gets +1 until end of that battle. :At the end of the battle this unit attacked, if this unit is in the [ExplosiveGrowth] state, leave this unit's Growth Factor on this as and return this unit to hand. (This effect is mandatory)