Stangg, Echo Warrior
Éomer, Marshal of Rohan
Helm of the Host

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Helm of the Host attached to Éomer. Stangg does not have summoning sickness. An opponent cannot block and kill Stangg. You control another legendary creature that can attack this turn. You have a way to kill the additional legendary creature at instant speed.

   Steps

How does this combo work?
1
At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Éomer with haste.
2
Declare Stangg and the additional legendary creature as attackers.
3
Stangg triggers, creating a 3/4 Stangg Twin creature token that is tapped and attacking.
4
Holding priority, kill the additional legendary creature.
5
When the creature dies, each Éomer that has not triggered this turn triggers, causing you to untap all creatures you control and to get at least one additional combat phase after this one.
6
Move to your next combat phase.
7
At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Éomer with haste.
8
Declare Stangg as an attacker.
9
Stangg triggers, creating a 3/4 Stangg Twin creature token that is tapped and attacking.
10
Put either Stangg Twin token into your graveyard due to the legend rule.
11
Repeat from step 5.

   Results

What do I get from this combo?
Infinite combat phases
Infinite death triggers
Infinite ETB
Infinite LTB
Infinite mana creatures you control can produce
Infinite untap of creatures you control
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