Cheapest priced copy (Warhammer 40,000 Commander): $2.99 at Card Kingdom, near mint, their price list as of .
Inquisitorial Rosette 
Artifact — Equipment · Rare · Warhammer 40,000 Commander · #159
Inquisition Agents — Whenever equipped creature attacks, create a 2/2 white Astartes Warrior creature token with vigilance that's attacking. Then attacking creatures gain menace until end of turn.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Warhammer 40,000 Commander | 159 | Rare | $2.99 | — |
| Warhammer 40,000 Commander | 159★ | Rare | — | — |
2 rulings from Wizards of the Coast
- 7 October 2022Although the tokens enter the battlefield attacking, they were never declared as attacking creatures. Abilities that trigger whenever a creature attacks won't trigger.
- 7 October 2022For the triggered ability, you declare which player or planeswalker the token is attacking as you put it onto the battlefield. It doesn't have to be the same player or planeswalker the equipped creature is attacking.