1x PWD and ritual
1x Piranha Army
1x Rising Energy
1x Gift of the Martyr
1x Burst Stream
1x Mirror Wall
Basically, wall them with BEWD,last turn, summon PA, use Burst Stream, use either RE or Riryoku followed by GotM to get PA up to either 5300 or 6800, and direct attack for double dmg. A win will almost always get you 7k+.
The 3 extra slots depend on the opponent. So for Tea, 3 Pot of Benevolence. Keith, 3 Destruction Jammer, and so on. And since BDS and PWD can pull from your deck, you can keep 22-24, so for Kaiba, you can add 2x Riryoku Field and 2x IMT. Obv, you need to plan around their cards, bait out things like Kuriboh and Econ as early as you can. Also, I use this with Life Boost a, so if you don't take DMG, you can use Mirror Wall to get down to exactly 1000 lp, then you get 1500 pts for Low LP, Comeback and Cards on the Brink. +2000 for winning and 3000 for 9999 dmg. Add another 500 for normal, special and ritual summon and that's 7k guaranteed. Works extremely well.
Piranha army doesn't deal damage even though the attack animation runs, it doesn't show up any numbers like it would normally do when you deal battle damage. Maybe the issue is related with the game being unable to show large numbers on the screen at the moment.
This one to farm vs Lvl10&20.
Not tried it on Lvl30&40 opponents.
1) Summon BEUD.
2) Play Piranha Army
3) Use Spell Card "Way to treasures" (dunno the english translation sorry but look at the picture).
4)Use the Spell Card Martyr Gift to transfer the poxer of BEUD to Piranha Army (and the monster wil reach one 5,300ATK).
Then U attack directly your opponent with Piranha Army. This will cost him/her 10,600 damage points.
This way you will win 3,000points in the Duel Evaluation. (because U scored more than 9,999 damage points).