Imotekh the Stormlord + Haunt of the Dead Marshes + Phyrexian Altar + Encroaching Mycosynth

Imotekh the Stormlord

Haunt of the Dead Marshes

Phyrexian Altar

Encroaching Mycosynth

How it works

1. Activate Phyrexian Altar by sacrificing Haunt of the Dead Marshes, adding .
2. Activate Haunt of the Dead Marshes by paying 2, returning it from your graveyard to the battlefield.
3. Haunt of the Dead Marshes and Imotekh's first ability trigger.
4. Resolve the Imotekh trigger, creating two 2/2 Necron Warrior artifact creature tokens.
5. Resolve the Haunt of the Dead Marshes trigger, causing you to scry 1.
6. Activate Phyrexian Altar twice by sacrificing the Necron Warriors, adding 2.
7. Repeat.