my favourite card would be Dark Magician and Dark Magician Girl and the reason being is because when dark magician is on the field he is already strong but wen he is sent to the graveyard dark magican girl get's a extra 2000 extra attack points i think.

then it's Maha Vilo and Axe of despair it's effect is good and wen it's equiped with continuous cards he get extra attack points ( it's best if u no how to use him)

then it's the blue eye's white dragon coz of there attack and with delta attack you could win on ur first turn if u have a very good way of summoning them all at once and i no that technique hehehe