Pentavus
Dross Scorpion
Grim Monolith

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Pentavus with two +1/+1 counters on it on the battlefield).

   Steps

How does this combo work?
1
Activate Grim Monolith by tapping it, adding
2
Activate Pentavus's first ability by paying 1 and removing a +1/+1 counter from it, creating a 1/1 Pentavite creature token.
3
Activate Pentavus's second ability by paying 1 and sacrificing the Pentavite.
4
When the Pentavite dies, Dross Scorpion triggers, untapping Grim Monolith.
5
Resolve the Pentavus ability, putting a +1/+1 counter on it.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite colorless mana
Infinite mana artifacts you control can produce
Infinite untap of artifacts you control
Daretti, Scrap Savant
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High Synergy Cards
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Enchantments
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Planeswalkers
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42%synergy
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Karn, the Great Creator
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Ugin, the Spirit Dragon
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31%synergy
Ugin, the Ineffable
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Ugin, Eye of the Storms
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13%synergy
Karn, Living Legacy
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Utility Lands
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Inkmoth Nexus
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19%synergy
Crystal Vein
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Wasteland
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17%synergy
Fomori Vault
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Eldrazi Temple
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Blast Zone
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Mikokoro, Center of the Sea
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Scavenger Grounds
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13%synergy
Ugin's Labyrinth
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14%synergy
Tectonic Edge
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Eye of Ugin
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12%synergy
Emergence Zone
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Glimmerpost
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9%synergy
Crawling Barrens
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Cloudpost
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Mishra's Factory
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Zhalfirin Void
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Arch of Orazca
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9%synergy
Deserted Temple
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City of Traitors
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Dark Depths
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8%synergy
Nesting Grounds
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8%synergy
Mana Artifacts
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94%synergy
Sol Ring
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Thran Dynamo
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73%synergy
Gilded Lotus
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45%synergy
Mind Stone
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30%synergy
Everflowing Chalice
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34%synergy
Dreamstone Hedron
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35%synergy
Mox Opal
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31%synergy
Midnight Clock
33%inclusion3 decks9 decks
29%synergy
Thought Vessel
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15%synergy
Chromatic Orrery
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24%synergy
The Eternity Elevator
23%inclusion3 decks13 decks
22%synergy
Mana Crypt
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17%synergy
Lotus Petal
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12%synergy
Arcane Signet
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-53%synergy
Worn Powerstone
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14%synergy
Liquimetal Torque
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13%synergy
Mox Diamond
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12%synergy
The Aetherspark
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13%synergy
Staff of Compleation
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12%synergy
Hedron Archive
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10%synergy
Commander's Sphere
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0%synergy
Jeweled Lotus
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8%synergy
Lion's Eye Diamond
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8%synergy
Chrome Mox
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4%synergy
Lands
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38%synergy
The Mycosynth Gardens
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27%synergy
Planar Nexus
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25%synergy
Talon Gates of Madara
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21%synergy
Gemstone Caverns
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18%synergy
Command Tower
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-61%synergy
Abstergo Entertainment
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11%synergy