Cheapest priced copy (Exodus): $0.35 at Card Kingdom, near mint, their price list as of .
High Ground 
Enchantment · Uncommon · Tenth Edition · #20
Each creature you control can block an additional creature each combat.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 20 | Uncommon | $0.49 | $6.99 |
| Exodus | 7 | Uncommon | $0.35 | — |
| The List | 10E-20 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 15 July 2007High Ground allows you to make some complicated blocks. For example, if you’re being attacked by three creatures (call them A, B, and C) and you control three creatures (X, Y, and Z), you can have X block A and B, Y block B and C, and Z block just C, among many other possible options. The defending player chooses how each blocking creature’s combat damage will be divided among the creatures it’s blocking.
- 15 July 2007High Ground’s effect is cumulative. If you have a creature that can already block an additional creature, now it can block three creatures.