Activate DNA Surgery to change all monsters on the field to Dragon-types. Because Bastion's monsters are now Dragon-types he cannot summon Kasha.
Summon Buster Whelp of the Destruction Swordsman to search out Destruction Swordsman Fusion. Use Emblem of the Dragon Destroyer to search out Buster Blader.
Fusion summon Buster Blader, the Dragon Destroying Swordsman and Dark Paladin with Destruction Swordsman Fusion using Buster Blader and one of Bastion's monsters as material.
Keep destroying Bastion's mosnters so he does not tribute summon into Red Ogre.
If ever he does tribute summon into Red Ogre he will return at least one of your fusion monsters back to the extra deck. You can then summon that fusion monster again using Destruction Swordsman Fusion.
Destruction Swordsman Fusion in your graveyard can be retrieved by discarding one hand card.
During your final turn, summon Gravekeeper's Vassal and use 2 Union attacks and Secret Pass to the Treasures on him.
Summon Unhappy Girl in attack position. She is essential to your stall because Bastion will not attack her until he has enough to kill you in one turn, this will give you some time to draw Spirit Barrier.
Search Unhappy Girl with Sangan and Rai-Mei.
Heal every turn with Golden Ladybug. If you already have Unhappy Girl on the field, you can use Sangan to search out Golden Ladybug.
Use Shard of Greed to draw into your deck.
If you have an extra Spirit Barrier you can send it to the graveyard with Magic Planter to draw 2 cards.
During your final turn, summon The Winged Dragon of Ra and give him your LP to use as attack.
Master of Fusion Can be used each time your Life Points decrase by 1800. In the Draw Phase, instead of doing a normal draw, one Polymerization Spell Card, from outside of your Deck, is added to your hand.
Summon Ojama Knight or Ojama King as early as possible. If summoned early on, he can lock 2 or 3 of Bastion's monster zones so he is unable to summon Red Ogre.
After that just keep stalling until you deck out. Ojama Blue helps you get Ojamas out of your deck, King of the Swamp helps you search Polymerization in your deck.
King of the Swamp can also be used as a substitute fusion material for Ojama King but not for Ojama Knight.
During your final turn, have 2 face-up attack position Ojama Knight/Ojama King then use Ojama Country. Normal Summon Gravekeeper's Vassal then use Secret Pass to the Treasures and 2 Union Attack on him. Direct attack for over 9999 damage assessment.
Use Golden Ladybug and Solemn Wishes to heal every turn.
Good Goblin Housekeeping helps you draw into your deck. If Solemn Wishes is on the field, drawing cards means additional heals.
Use Zeradias the Herald of Heaven to search out The Sanctuary in the Sky.
The Sanctuary in the Sky makes it so that you do not take damage when a Fairy-type monster you control battles. Because your Cloudian monsters cannot be destroyed by battle, this will be your stall setup.
On your final turn, summon The Winged Dragon of Ra and give him your LP to use as attack.