The Peregrine Dynamo

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partners: Teferi, Who Slows the Sunset, Plargg, Dean of Chaos // Augusta, Dean of Order, Gideon, Martial Paragon, Lita, Mechanical Engineer, Estrid, the Masked
• B2 Core — Not in the same deck as its two-card combo partners: Teferi, Who Slows the Sunset, Plargg, Dean of Chaos // Augusta, Dean of Order, Gideon, Martial Paragon, Lita, Mechanical Engineer, Estrid, the Masked
• B3 Upgraded — Not in the same deck as its early two-card combo partners: Teferi, Who Slows the Sunset, Plargg, Dean of Chaos // Augusta, Dean of Order, Gideon, Martial Paragon, Lita, Mechanical Engineer, Estrid, the Masked
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Teferi, Who Slows the Sunset, Plargg, Dean of Chaos // Augusta, Dean of Order, Gideon, Martial Paragon, Lita, Mechanical Engineer, Estrid, the Masked (early with Teferi, Who Slows the Sunset, Plargg, Dean of Chaos // Augusta, Dean of Order, Gideon, Martial Paragon, Lita, Mechanical Engineer, Estrid, the Masked)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

98 known combos, 5 of them two-card.

• Teferi, Who Slows the Sunset + The Peregrine Dynamo
  Produces: Infinite untap of permanents you control, Infinite lifegain, Infinite lifegain triggers
  View on Commander Spellbook
• Tezzeret the Seeker + The Peregrine Dynamo + Sol Ring
  Produces: Infinite colorless mana, Infinite mana artifacts you control can produce, Infinite untap of artifacts you control
  View on Commander Spellbook
• Karn, Legacy Reforged + Voltaic Construct + The Peregrine Dynamo
  Produces: Infinite colorless mana that can't be spent to cast nonartifact spells
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2022-09-09 · Wizards of the Coast
  A “legendary source” is a permanent, spell, or card in any zone with the supertype “legendary.” For example, The Peregrine Dynamo’s ability can target a cycling ability you’ve activated if the discarded card is a legendary card.
• 2022-09-09 · Wizards of the Coast
  If the ability is modal (that is, if it says, “Choose one —” or similar), the mode is copied and can’t be changed.
• 2022-09-09 · Wizards of the Coast
  If the ability divides damage or distributes counters among a number of targets, the division and number of targets can’t be changed. If you choose new targets, you must choose the same number of targets.
• 2022-09-09 · Wizards of the Coast
  Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keyword abilities (such as equip) are activated abilities and will have colons in their reminder text. An activated mana ability is one that produces mana as it resolves, not one that costs mana to activate.
• 2022-09-09 · Wizards of the Coast
  Triggered abilities use the word “when,” “whenever,” or “at.” They’re often written as “[Trigger condition], [effect].” Some keyword abilities are triggered abilities and will have “when,” “whenever,” or “at the beginning of” in their reminder text.
• 2022-09-09 · Wizards of the Coast
  The source of the copy is the same as the source of the original ability.
• 2022-09-09 · Wizards of the Coast
  Any choices made when the ability resolves won’t have been made yet when it’s copied. Any such choices will be made separately when the copy resolves. If a triggered ability asks you to pay a cost, you pay that cost for the copy separately.
• 2022-09-09 · Wizards of the Coast
  In some cases involving linked abilities, an ability requires information about “the exiled card.” When this happens, the ability gets multiple answers. If these answers are being used to determine the value of a variable, the sum is used. If an ability attempts to create a token that is a copy of “the exiled card,” it creates a token for each card exiled this way that is a copy of that card.
• 2022-09-09 · Wizards of the Coast
  If an ability is linked to a second ability, copies of that ability are also linked to that second ability. If the second ability refers to “the exiled card,” it refers to all cards exiled by the ability and the copy. For example, if Tidehollow Sculler’s enters-the-battlefield ability is copied and two cards are exiled, they both return when Tidehollow Sculler leaves the battlefield.
• 2022-09-09 · Wizards of the Coast
  The Peregrine Dynamo’s ability targets an ability that is on the stack and creates another instance of that ability on the stack. It doesn’t cause any object to gain an ability.
• 2022-09-09 · Wizards of the Coast
  If the activated ability’s cost contains a choice, such as a creature to sacrifice or a number of counters to remove, the copy uses that same information. You can’t pay the cost again, even if you want to.

Rulings: Scryfall · Wizards of the Coast