Cheapest priced copy (The List): $2.29 at Card Kingdom, near mint, their price list as of .
Teferi's Veil 
Enchantment · Uncommon · Weatherlight · #53
Whenever a creature you control attacks, it phases out at end of combat. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | WTH-53 | Uncommon | $2.29 | — |
| Weatherlight | 53 | Uncommon | $2.29 | — |
One ruling from Wizards of the Coast
- 1 April 2008The “at end of combat” ability triggers after combat damage resolves. Creatures dealt lethal damage in combat won’t be saved this way.