the front side of Dual Casting
the back of a classic MtG card
the front side of Toils of Night and Day
the back of a classic MtG card
the front side of Twinning Staff
the back of a classic MtG card

Color Identity: U, R

Initial Card State

  1.  Toils of Night and Day in hand.
  2.  Dual Casting and Twinning Staff on the battlefield.

Notable Prerequisites

  1. Dual Casting attached to any creature you control without summoning sickness.
  2. A permanent that can tap for ({R} magic symbol)  .

Mana Needed

  1. ({2} magic symbol)  ({U} magic symbol)  ({R} magic symbol)   available.

Steps

  1. Cast Toils of Night and Day with any targets.
  2. Pay ({R} magic symbol)   and tap the creature enchanted with Dual Casting to copy Toils of Night and Day, targeting the creature enchanted with Dual Casting and a permanent that can tap for ({R} magic symbol)  .
  3. Twinning Staff triggers, creating a copy of Toils of Night and Day.
  4. The copy targets at least the permanent.
  5. Allow the first copy of Toils of Night and Day to resolve.
  6. Tap the permanent for ({R} magic symbol)  .
  7. Repeat steps 2-6.

Results

  1. Infinite colored mana.
  2. Infinite untap.

Metadata

  1. In 90 decks according to EDHREC.
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