Name:Epic Experiment
ManaCost:X U R
Types:Sorcery
A:SP$ Mill | Cost$ X U R | References$ X | Defined$ You | NumCards$ X | Destination$ Exile | RememberMilled$ True | SubAbility$ DBPlay | SpellDescription$ Exile the top X cards of your library. For each instant and sorcery card with converted mana cost X or less among them, you may cast that card without paying its mana cost. Then put all cards exiled this way that weren't cast into your graveyard.
SVar:DBPlay:DB$ Play | Valid$ Instant.cmcLEX+IsRemembered+YouOwn,Sorcery.cmcLEX+IsRemembered+YouOwn | ValidZone$ Exile | Controller$ You | WithoutManaCost$ True | Optional$ True | Amount$ All | SubAbility$ DBGrave
SVar:DBGrave:DB$ ChangeZoneAll | Origin$ Exile | Destination$ Graveyard | ChangeType$ Card.IsRemembered+YouOwn | SubAbility$ DBCleanup
SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
SVar:X:Count$xPaid
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/epic_experiment.jpg
Oracle:Exile the top X cards of your library. For each instant and sorcery card with converted mana cost X or less among them, you may cast that card without paying its mana cost. Then put all cards exiled this way that weren't cast into your graveyard.