t: 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 1 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.
