What is Reverberate in MTG?

The Magic: The Gathering card Reverberate is classified as an instant that copies a target instant or sorcery spell. Reverberate only targets a card in play and not a card that has made it to the graveyard, even within the same turn.

The cost of two red mana makes this card highly effective in countering counter-spells, allowing an action to proceed as planned. Reverberate's target can be a card within the player's own stack or that of the player's opponent. It works when targeting another card with the same name, allowing for a change in target with each new instant spell cast.

The card was first introduced in 2011 with standard and foil cards released.