Cards Needed:
Ultimate Offering
Mysterious Puppeteer
First of all you can get both of these cards in seto kaibas deck (simple don't have to waste money buying loads of boosters) right to the point then
what you do is lay your rubbish monster then lay ultimate offering face down. start loading your field up and hope so will your opponent (hopefully). When you only have 2 spaces left or how ever many you need flip ultimate offering and load up your field with your field with high powered monsters but leave one space for your mysterious puperteer than lay that and you will get all your LP back simple!
Paul