Cheapest priced copy (Innistrad Remastered): $2.49 at Card Kingdom, near mint, their price list as of .
Rooftop Storm 
Enchantment · Rare · Innistrad · #71
You may pay {0} rather than pay the mana cost for Zombie creature spells you cast.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
5 printings · $2.49 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad Remastered | 83 | Rare | $2.49 | $2.49 |
| Innistrad Remastered | 306 | Rare | $4.99 | $4.49 |
| Innistrad | 71 | Rare | $2.99 | $4.49 |
| Midnight Hunt Commander | 103 | Rare | $2.49 | — |
| The List | ISD-71 | Rare | $2.79Out of stock | — |
2 rulings from Wizards of the Coast
- 22 September 2011You must still pay any mandatory additional costs, such as exiling a creature card from your graveyard for Makeshift Mauler.
- 22 September 2011The mana cost and mana value of the spell are unchanged. Rooftop Storm only changes what you pay.