Basri's Lieutenant + Metallic Mimic + Phyrexian Altar

W identity

Commander legal

The 3 combo pieces

What must be in place

You control at least one additional creature that has a +1/+1 counter on it.
"Knight" chosen with Metallic Mimic.

How to execute it

  1. Activate Phyrexian Altar by sacrificing another creature with a +1/+1 counter on it, adding one mana of any color.
  2. When the creature dies, Basri's Lieutenant's second ability triggers, creating a 2/2 Knight creature token that enters the battlefield with a +1/+1 counter due to Metallic Mimic.
  3. Repeat.

What the combo produces