Marvin, Murderous Mimic

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partners: Ioreth of the Healing House, Splinter Twin, Grinning Ignus
• B2 Core — Not in the same deck as its two-card combo partners: Ioreth of the Healing House, Splinter Twin, Grinning Ignus
• B3 Upgraded — Not in the same deck as its early two-card combo partner: Ioreth of the Healing House
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Ioreth of the Healing House, Splinter Twin, Grinning Ignus (early with Ioreth of the Healing House)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

307 known combos, 3 of them two-card.

• Marvin, Murderous Mimic + Ioreth of the Healing House
  Produces: Infinite untap of legendary creatures you control, Infinite mana legendary creatures you control can produce
  View on Commander Spellbook
• Marvin, Murderous Mimic + Pili-Pala + Palladium Myr
  Produces: Infinite colored mana, Infinite colorless mana
  View on Commander Spellbook
• Marvin, Murderous Mimic + Farmstead Gleaner + Palladium Myr
  Produces: Infinite +1/+1 counters on a creature
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2024-09-20 · Wizards of the Coast
  Once one of Marvin's abilities has been activated, it doesn't matter if the other creature you control with that ability leaves the battlefield; the ability still resolves.
• 2024-09-20 · Wizards of the Coast
  If an activated ability of a creature you control that doesn't have the same name as Marvin references the card it's printed on by name, treat Marvin's version of that ability as though it referenced Marvin instead. For example, say you control Marvin as well as Floodpits Drowner (which has the ability "{1}{U}, {T}: Shuffle Floodpits Drowner and target creature with a stun counter on it into their owners' libraries."). You would treat Marvin's version of the ability as though it said "{1}{U}, {T}: Shuffle Marvin, Murderous Mimic and target creature with a stun counter on it into their owners' libraries."
• 2024-09-20 · Wizards of the Coast
  Marvin gains only activated abilities. It doesn't gain triggered abilities or static abilities. Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and may have colons in their reminder text.

Rulings: Scryfall · Wizards of the Coast