Here is a slightly more detailed drawing about the twins.

They can switch around their Sp att and Physical Att. Something like siphoning their energies to one another to boost that specific parameter (ultimately decreasing the other too)
The twins use their late grandmother's bead as their strong attacks.
The twin with higher physical attack keeps their opponent away from the higher special attack twin as they charge their magic attack.
Their attacks are similar to how one passes a soccer ball around, the more times the orb (energy or the bead) is passed the stronger the final attack is. (maximum of 7 passes)