Wizard's Spellbook
Artifact
(CMC 7)
: Exile target instant or sorcery card from a graveyard. Roll a d20. Activate only as a sorcery.
1--9 | Copy that card. You may cast the copy.
10--19 | Copy that card. You may cast the copy by paying rather than paying its mana cost.
20 | Copy each card exiled with Wizard's Spellbook. You may cast any number of the copies without paying their mana costs.
- [AFR] Adventures in the Forgotten Realms #82 (R)