Power of the Tributed When you sucessfully Tributed Summon "The Winged of Ra", its ATK will becomes the sum of the ATK of the Tirbuted Monsters, and its DEF will becomes the sum of the Tributed Monsters.
Use King of the Swamp depending on what you need. You can send it to the Graveyard to get Polymerization or use it as a Fusion Substitue. It's recommended to have more copies of this card and replace other Fusion Substitute monsters.
Don't destroy his monsters so he won't deck out faster than you.
On the final turn you should have the card in your hand and not on the field, then enter your battle phase with 1 spell rap spot on the field not being used and you will be prompted to use the card from your hand (putting it face down on the field will not let you use it the turn it is placed, you need to keep it in your hand)