Here is a combo to summon any strong monster without tribute. You will need:
      1 cheerful coffin card
      1 monster reborn
      any strong monster you want to summon
 
      First, make sure you have a strong card in your hand (ex. BEWD) then play the cheerful coffin card and discard that strong card. Your opponent might think its dumb to do this but then u play monster reborn to bring it back! now u have a strong monster on the field without having to sacrifice anyone-

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