Cheapest priced copy (Magic 2012): $1.79 at Card Kingdom, near mint, their price list as of .
Call to the Grave 
Enchantment · Rare · Scourge · #58
At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature of their choice.
At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $1.79 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2012 | 85 | Rare | $1.79 | $5.99 |
| Scourge | 58 | Rare | $2.29 | $22.99 |
3 rulings from Wizards of the Coast
- 22 September 2011If a player controls no creatures, or each creature they control is a Zombie, that player does nothing when the first ability resolves.
- 22 September 2011In a Two-Headed Giant game, Call to the Grave will trigger twice during each team's upkeep, once for each player. Each of the two players will sacrifice a non-Zombie creature when the ability referring to that player resolves.
- 22 September 2011If there is at least one creature on the battlefield at the beginning of the end step, the last ability won't trigger. If it does trigger, but a creature enters before it resolves, the ability won't do anything when it resolves. Call to the Grave's controller won't sacrifice it.