Cheapest priced copy (Conflux): $0.99 at Card Kingdom, near mint, their price list as of .
Meglonoth 
Creature — Beast · 6/6 · Rare · Conflux · #118
Vigilance, trample
Whenever this creature blocks a creature, this creature deals damage to that creature's controller equal to this creature's power.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.99 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conflux | 118 | Rare | $0.99 | $2.99 |
| Salvat 2011 | 173 | Rare | — | — |
3 rulings from Wizards of the Coast
- 1 February 2009You don’t check Meglonoth’s power until its triggered ability resolves.
- 1 February 2009If Meglonoth somehow blocks more than one creature, its ability will trigger once for each creature it blocks.
- 1 February 2009If Meglonoth leaves the battlefield after its ability triggers but before it resolves, the amount of damage it deals is equal to its power as it last existed on the battlefield.