It's obviously an infinite loop with the hieratic monsters (Seal of Dragon King & Gebeb). The other card you need is Raptinus. If you have Raptinus and one of the two hieratics on the field, you can tribute them over and over again with Little Swordsman. It's quite simple.
Here's the loop if you think it's not simple enough:
You need to have Raptinus, Little Swordsman and Gebeb on the field.
1) Use LS to tribute Gebeb
2) Use Gebeb's effect to special summon Seal
3) Use Seal's effect to special summon Gebeb again
4) Go back to step 1)
Hours if you try it in normal fight. But less than 10 minutes if you do it in EX fight since you can multiply the attack of your monster by 5 each 5 rotations.
Anoymous
infma5