Main Phase 2

You automatically enter Main Phase 2 after the Battle Phase. In this phase you may:


 * Normal Summon, Tribute Summon or Set one monster, if one was not conducted in Main Phase
 * Manually Change the Battle Position, or perform a Flip Summon on, a Monster Card, providing it was not Set or Normal/Tribute Summoned this turn. If a monster battled in the Battle Phase, you cannot adjust its Battle Position in Main Phase 2.
 * Activate effects, such as those of Barrel Dragon or Blowback Dragon, if they have not already been activated in Main Phase 1.

You can flip a monster card face-down, as per it's effect (Such as with Guardian Sphinx or Swarm of Scarabs, as long as this special effect wasn't used during Main Phase 1), and then perform a Manual Flip Summon, (as long as a Manual Battle Position change was not performed on this card in Main Phase 1), since the rule only states one Manual Battle Position Change per turn.

At the conclusion of Main Phase 2, you then enter the End Phase.