Discard 1 card, then target 1 card on the field; destroy it.
|Pack||Soul of Resurrection [UR]|
Many Fabled monsters effects are triggered when they are discarded, making Raigeki Break work well in the deck because you can get some utility out of the cost. Some Fabled monsters also work best when you are able to keep your hand count low.
The discard cost can keep your hand size low which is beneficial to Infernity decks who want to have no hand cards as often as possible. Infernity decks interact with the graveyard a lot so the discard can be good setup.