I`m sure everyone already knows this tip.But i`m going to tell you anyway for the rookies that don`t know it yet.First you play the Dark Magician (2500),next you play yami for a field card (2700),then you play book of secret arts (3000)-equivelent to a BEWD,and finallly reinforcements (3500),but also remember that reinforcements only lasts one turn so use it wisely especially on a BEWD!

Well,that is an easy trick even though it takes up 4/5 of your magic/trap zone 5 card limit.