Grave Cascade

[S3ptic]

Grave Cascade

Sorcery

You may play an instant or sorcery spell with converted mana cost X or less from any graveyard without paying its mana cost.
If you do, you may play any number of additional instant or sorcery spells from any graveyards without paying their mana cost as long as each has a converted mana cost less than the spell before it.
Exile all spells played this way instead of putting them into their owner's graveyard. Exile Grave Cascade.

[Xyx]

Wow, that takes a lot of setting up to be even remotely useful. Could it truly be a fixed Yawgmoth's Will?