Insanity

Reveal the top X cards of your library. You may cast any instant and/or sorcery cards revealed this way without paying their mana costs. For each blue card cast in this way, draw a card at the beginning of the next end step. For each black card cast in this way, each opponent loses 3 life at the beginning of the next end step. Put the remaining cards into your graveyard.
Flashback {x}{u/b}{u/b}{u/b}