Color Identity: B

Prerequisites

  1.  All permanents on the battlefield.

Steps

  1. Activate
    Workhorse
    Workhorse
    by removing all +1/+1 counters, adding that many ({C} magic symbol)  .
  2. Activate
    Ashnod's Altar
    Ashnod's Altar
    by sacrificing
    Workhorse
    Workhorse
    , adding ({C} magic symbol)  ({C} magic symbol)  .
  3. Workhorse
    Workhorse
    undying ability triggers, returning it to the battlefield with an additional +1/+1 counter on it.
  4. Repeat.

Results

  1. Infinite colorless mana.
  2. Infinite death triggers.
  3. Infinite ETB.
  4. Infinite LTB.
  5. Infinite sacrifice triggers.

Metadata

  1. In 247 decks according to EDHREC.
footer