I'm often use this combo in my Gladiator Harpie Deck

Cards you need:

Random Gladiator Beast Monster or Gladiator beast Octavius


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Swallow's Nest


Description

I attack with Bestiary and get out Octavius. Now we have the choice to wait or activate Swallow's Nest to get out Dark Simorgh. I like to wait 1 turn if I have advantage. If Octavius is still on the field then we attack with Octavius and use Swallow's Nest before his negative effect activate and and summon Dark Simorgh