Cheapest priced copy (Tales of Middle-earth Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Frontier Warmonger 
Creature — Human Warrior · 4/4 · Rare · Murders at Karlov Manor Commander · #154
Whenever one or more creatures attack one of your opponents or a planeswalker they control, those creatures gain menace until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 52 | Rare | $0.59 | — |
| Commander Masters | 224 | Uncommon | $0.59 | $0.79 |
| Tales of Middle-earth Commander | 217 | Rare | $0.49 | — |
| Murders at Karlov Manor Commander | 154 | Rare | $0.49 | — |
One ruling from Wizards of the Coast
- 17 April 2020Creatures your opponents control attacking one of your opponents will cause Frontier Warmonger's ability to trigger.