Main Phase 1

In Main Phase 1 (Japanese: メインフェイズ１ Meinfeizu Ichi), the turn player may:


 * Normal Summon, Advance Summon, or Set a monster.
 * Special Summon a monster(s).
 * Manually change the Battle Position or perform a Reverse Summon on a Monster Card, provided it was not Set or Summoned this turn.
 * Activate or Set Magic and/or Trap Cards of any speed. Quick-Play Magic Cards and Trap Cards cannot be activated in the turn they are Set.