Main Phase 1 (Japanese: メインフェイズ１ Mein Feizu Ichi) is a Main Phase conducted after the Standby Phase. As a Main Phase, most actions that could normally be performed in Main Phase 2 can also be performed in this phase. After Main Phase 1 has ended, the turn player may choose to enter the Battle Phase. If they choose not to, the player automatically proceeds to the End Phase (they cannot enter Main Phase 2 unless they conduct their Battle Phase).