Malcolm, Keen-Eyed Navigator
Lightning-Rig Crew
Umbral Mantle

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Umbral Mantle attached to Lightning-Rig Crew. Lightning-Rig Crew does not have summoning sickness. You have at least three opponents.

   Steps

How does this combo work?
1
Activate Lightning-Rig Crew by tapping it, dealing 1 damage to each opponent.
2
Malcolm triggers, creating a Treasure artifact token for each opponent dealt damage this way.
3
Activate three Treasures by tapping and sacrificing them, adding 3.
4
Activate Lightning-Rig Crew by paying 3 and untapping it, giving it +2/+2 until end of turn.
5
Repeat until you have two or less opponents remaining.

   Results

What do I get from this combo?
Near-infinite damage to most opponents
Near-infinitely large creature until end of turn
Infinite damage to one opponent
Admiral Beckett Brass
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Talisman of Creativity
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14%synergy
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17%synergy
Lotus Petal
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14%synergy
Mox Amber
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14%synergy
Mind Stone
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4%synergy
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Lands
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Frostboil Snarl
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Scalding Tarn
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16%synergy
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Training Center
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Bloodstained Mire
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13%synergy
Gemstone Caverns
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13%synergy
Flooded Strand
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Ferrous Lake
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Temple of Epiphany
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Riverpyre Verge
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Peculiar Lighthouse
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Secluded Courtyard
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Cavern of Souls
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Thundering Falls
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Marsh Flats
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Wooded Foothills
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