Necroduality + Phyrexian Altar + Razorlash Transmogrant

Mana needed: {B}{B}

UB identity

Commander legal

The 3 combo pieces

What must be in place

An opponent controls four or more nonbasic lands.

How to execute it

  1. Activate Razorlash Transmogrant by paying {B}{B}, returning it from your graveyard to the battlefield.
  2. When Razorlash Transmogrant enters the battlefield, Necroduality triggers, creating a token copy of Razorlash Transmogrant.
  3. Activate Phyrexian Altar twice by sacrificing both Razorlash Transmogrants, adding {B}{B}.
  4. Repeat.

What the combo produces