Color Identity: U, R

Prerequisites

  1.  
    Twincast
    Twincast     and
    Fork
    Fork     in hand.
  2. You have a way to cast an additional instant or sorcery, or an opponent is casting one.
  3. ({U} magic symbol)  ({U} magic symbol)  ({R} magic symbol)  ({R} magic symbol)  , plus enough mana to cast the additional spell if needed available.

Steps

  1. Cast any instant or sorcery spell, or wait for an opponent to cast one.
  2. Holding priority, cast
    Fork
    Fork     by paying ({R} magic symbol)  ({R} magic symbol)  , targeting that spell.
  3. Cast
    Twincast
    Twincast     by paying ({U} magic symbol)  ({U} magic symbol)  , copying
    Fork
    Fork    , with the copy targeting
    Fork
    Fork    .
  4. Resolve the copy of
    Fork
    Fork    , copying the original
    Fork
    Fork    , with the copy targeting the original
    Fork
    Fork    .
  5. Repeat step 4.

Results

  1. Infinite magecraft triggers.

Metadata

  1. In 1271 decks according to EDHREC.
footer