Felidar Guardian
Altar of the Brood
Spark Double

   Prerequisites

What do I need to start this combo?
Spark Double in hand.
Felidar Guardian and Altar of the Brood on the battlefield.
3 available

   Steps

How does this combo work?
1
Cast Spark Double by paying 3.
2
Spark Double enters the battlefield as a copy of Felidar Guardian, triggering Altar of the Brood and itself.
3
Resolve the Altar of the Brood trigger, causing each opponent to mill a card.
4
Resolve the Spark Double's trigger, blinking Felidar Guardian.
5
Felidar Guardian enters the battlefield, triggering Altar of the Brood and itself.
6
Resolve the Altar of the Brood trigger, causing each opponent to mill a card.
7
Resolve the Felidar Guardian's trigger, blinking Spark Double.
8
Repeat from step 2.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite mill
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