Start of Turn Step

Start of Turn Step ターン開始ステップ (Tān Kaishi Suteppu)
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Start of Turn step (formerly known as the Untap Step) is the first step of a turn.

Details

Any of your creatures in the battle zone as well as the cards in your mana zone are untapped.

This will allow you to re-use mana cards and attack with creatures again.

Other

• If a creature with a Silent Skill ability exists in the battle zone in a tapped state at the start of your turn, they may keep themselves tapped by their ability at the start of the turn.
• If Belfegius, Emperor of Death is in the battle zone, it is optional to untap creatures. If a player decides to untap his creatures save for Belfegius itself, it will be destroyed instantly by Belfegius.
• If Warped Lunatron is in the battle zone, creature's wont untap in this step.
• Once they are affected by Freeze, they won't untap in the next start of turn step.
• After the March 25, 2017 Rules revision, the order of steps was changed. The "start of turn" triggers are now performed after the cards in the battle zone and your mana zone are untapped.
  • Cards such as Evil Incarnate that trigger at the "start of the turn" trigger after this step. However a card such as Luna Revolver Wheel "when you untap at the start of your turn" refers to this phase.
  • At the start of your turn, if a card such as Awakening Giant or Quattro Fang, Soul Gang Leader puts a card into your mana zone tapped, it will stay tapped, as the "start of turn" abilities now trigger after the start of turn step.
  • If you remove the seal with a tapped creature with the Denjara Switch ability of Dokindam Area, Forbidden of D, you cannot untap them in the start of turn step due to the new rulings.
  • As Memento Guardian Shrine, Prison Court of D's Denjara Switch activates after the draw step, opponent's creatures will stay tapped after it is sent out.
• When sending a creature that taps the opponent's creatures via Shouten, Stellar Guidance's last effect, the creatures will stay tapped since they untap before Shouten sends out the creature.

Rulings

• English
• Japanese

From the Duel Masters - General Game Rules: Version 1.41 (April 12, 2024)

• 501. Start of Turn Step
  • 501.1 The active player determines which cards they control will untap. Then they untap them all simultaneously. This is a turn-based action. Normally, all of a player’s cards untap, but effects can keep one or more of a player’s cards from untapping.
    • 501.1a The active player may replace the untapping of his creatures with the 'Silent Skill' ability. However, the effect of the 'Silent skill' itself is independent of the invocation condition. The activation of 'Silent Skill' produces an effect which is resolved after the other cards untap.
  • 501.2. Any abilities that trigger 'at the start of your turn' trigger. All abilities that trigger at the start of a turn trigger. The triggered effects are declared in turn order and processed one by one.
    • 501.2a If a card with an ability that triggers 'at the start of your turn' moves to a zone where abilities trigger during this step, that ability doesn't trigger until the next turn's beginning step.

From the Duel Masters - General Game Rules: Version 1.41 (April 12, 2024)

• 501. ターン開始ステップ
  • 501.1. ターン・プレイヤーは、自分のカードのうちでどれをアンタップするかを決定し、それらを同時にアンタップします。これはターン起因処理です。通常、プレイヤーのカードはすべてアンタップしますが、効果によってカードのアンタップが妨げられることがあります。
    • 501.1a プレイヤーはサイレントスキルを持つクリーチャーをアンタップさせないことを選んでもかまいません。これはサイレントスキル能力によってアンタップを置換したことになります。ただし、サイレントスキルの効果自体は発動条件とは独立しています。サイレントスキルの効果は起動した瞬間に待機状態となり、他のカードがアンタップした後に解決されます。
  • 501.2. すべての「ターンのはじめに」誘発する能力が誘発します。誘発した効果はターン・プレイヤーから解決する事を宣言して順に処理します。
    • 501.2a 「ターンのはじめに」誘発する能力を持ったカードがこのステップ中に能力が誘発するゾーンに移動した場合、その能力は次のターン開始ステップまで誘発しません。

• Cards such as Vacuum Crawler or Intense World! Shachihoko Kaiser resolve their abilities directly after this step.
• This step is followed by the Draw Step.
• The process of untapping a card is a forced rule.
• Creatures that weren't in the battle zone at the start of the start of turn step won't be untapped during your turn. For example, if you put a Miss Mei, Forest of Sleeping into the battle zone during your Main Step, you will be unable to untap it until your next turn.