Cheapest priced copy (Commander 2018): $0.59 at Card Kingdom, near mint, their price list as of .
Finest Hour 
Enchantment · Rare · Commander 2018 · #180
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
Whenever a creature you control attacks alone, if it's the first combat phase of the turn, untap that creature. After this phase, there is an additional combat phase.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.59 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Alara Reborn | 126 | Rare | $0.99 | $5.99 |
| Commander 2018 | 180 | Rare | $0.59 | — |
2 rulings from Wizards of the Coast
- 1 May 2009Finest Hour’s second ability has an “intervening ‘if’ clause.” The ability won’t trigger at all unless it’s the first combat phase of the turn.
- 1 May 2009Unlike other similar cards, Finest Hour doesn’t create a main phase in between the two combat phases. The second combat phase will begin immediately after the current one ends.