Color Identity: U

Prerequisites

  1.  All permanents on the battlefield.

Steps

  1. Whenever an opponent controls a creature, activate
    Ashnod's Altar
    Ashnod's Altar     by sacrificing
    Keiga, the Tide Star
    Keiga    , adding ({C} magic symbol)  ({C} magic symbol)  .
  2. When
    Keiga, the Tide Star
    Keiga     dies, it and
    Nim Deathmantle
    Nim Deathmantle     trigger.
  3. Resolve the
    Keiga, the Tide Star
    Keiga     trigger, causing you to gain control of a creature an opponent controls.
  4. Activate
    Ashnod's Altar
    Ashnod's Altar     by sacrificing the creature you gained control of in step 3, adding ({C} magic symbol)  ({C} magic symbol)  .
  5. Resolve the
    Nim Deathmantle
    Nim Deathmantle     trigger from step 2, causing you to pay ({4} magic symbol)   to return
    Keiga, the Tide Star
    Keiga     from your graveyard to the battlefield, and attach
    Nim Deathmantle
    Nim Deathmantle     to it.
  6. Repeat as desired and/or whenever a creature enters the battlefield under an opponent's control.

Results

  1. Gain control of all creatures opponents control and sacrifice them.
  2. Gain control of any creature that enters the battlefield under an opponent's control.

Metadata

  1. In 104 decks according to EDHREC.
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