Sidisi, Undead Vizier
Rooftop Storm
Sedraxis Alchemist
Gray Merchant of Asphodel
Rot Hulk
Nantuko Husk

   Prerequisites

What do I need to start this combo?
Rooftop Storm on the battlefield.
Sidisi in hand.
Nantuko Husk on the battlefield or in your graveyard.
All other permanents in your library.
You have at least two opponents.

   Steps

How does this combo work?
1
Cast Sidisi by paying 0.
2
Sidisi's exploit ability triggers, sacrificing itself.
3
Sidisi triggers, searching your library for Rot Hulk, putting it in your hand and shuffling your library.
4
Cast Rot Hulk by paying 0.
5
Rot Hulk enters the battlefield, returning Sidisi and Nantuko Husk, if applicable, from your graveyard to the battlefield.
6
Sidisi's exploit ability triggers, sacrificing itself.
7
Sidisi triggers, searching your library for Sedraxis Alchemist, putting it in your hand and shuffling your library.
8
Cast Sedraxis Alchemist by paying 0.
9
Sedraxis Alchemist enters the battlefield, returning Rot Hulk from the battlefield to your hand.
10
Activate Nantuko Husk by sacrificing Sedraxis Alchemist, giving Nantuko Husk +2/+2 until end of turn.
11
Cast Rot Hulk by paying 0.
12
Rot Hulk enters the battlefield, returning Sidisi and Sedraxis Alchemist from your graveyard to the battlefield.
13
Sidisi and Sedraxis Alchemist enter the battlefield, triggering Sidisi's exploit ability and Sedraxis Alchemist.
14
Resolve the Sidisi exploit trigger, sacrificing itself.
15
Sidisi triggers, searching your library for Gray Merchant of Asphodel, putting it in your hand and shuffling your library.
16
Resolve the Sedraxis Alchemist trigger, returning Rot Hulk from the battlefield to your hand.
17
Cast Gray Merchant of Asphodel by paying 0.
18
Gray Merchant of Asphodel enters the battlefield, causing each opponent to lose life equal to your devotion to black and causing you to gain life equal to the life lost this way.
19
Activate Nantuko Husk by sacrificing Gray Merchant of Asphodel and Sedraxis Alchemist, giving Nantuko Husk +4/+4 until end of turn.
20
Cast Rot Hulk by paying 0.
21
Rot Hulk enters the battlefield, returning Gray Merchant of Asphodel and Sedraxis Alchemist from your graveyard to the battlefield.
22
Gray Merchant of Asphodel and Sedraxis Alchemist enter the battlefield, triggering their abilities.
23
Resolve the Gray Merchant of Asphodel trigger, causing each opponent to lose life equal to your devotion to black and causing you to gain life equal to the life lost this way.
24
Resolve the Sedraxis Alchemist trigger, returning Rot Hulk from the battlefield to your hand.
25
Repeat from step 19.

   Results

What do I get from this combo?
Each opponent loses the game
Infinite death triggers
Infinite ETB
Infinite lifegain
Infinite lifegain triggers
Infinite lifeloss
Infinite LTB
Infinitely large creature until end of turn
Infinite sacrifice triggers
Infinite storm count
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Mana Artifacts
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