Kaya's Ghostform + Phyrexian Altar + Eternal Witness

3-card combo · BG

Verdict

Yes — this 3-card loop generates infinite death and ETB triggers for one black mana per cycle in any black-green shell.

Cards required

Cheapest stack total

$63.03

Color identity

Popularity

2,043 decks

Format

Commander

Buy required cards on TCGplayer

Phyrexian Altar turns Eternal Witness into the mana to recast Kaya's Ghostform, which returns Eternal Witness to the battlefield, which returns Kaya's Ghostform to hand — a perfectly self-sustaining loop. Every iteration produces an ETB, an LTB, and a sacrifice trigger, so anything from Poison-Tip Archer to Zulaport Cutthroat closes the game on the spot. This fits naturally into Meren of Clan Nel Toth and Lathril, Blade of the Elves lists that already want recursive creatures and a free sacrifice outlet.

How it works

Prerequisites

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Steps

Activate Phyrexian Altar by sacrificing Eternal Witness, adding .
When Eternal Witness dies, Kaya's Ghostform triggers, returning Eternal Witness from your graveyard to the battlefield.
When Eternal Witness enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to your hand.
Cast Kaya's Ghostform by paying , attaching it to Eternal Witness.
Repeat.

Result

Infinite death triggers; Infinite ETB; Infinite LTB; Infinite sacrifice triggers; Infinite storm count

Cheaper, tighter, alternate lines

Altar of Dementia replaces Phyrexian Altar if the gameplan is milling the table rather than draining it, and it costs zero per loop rather than one black. For the kill, Blood Artist and Zulaport Cutthroat are the cleanest drain outlets; Altar of the Brood mounts the same threat on an artifact that most lists already run.