Cheapest priced copy (Ravnica Allegiance): $1.79 at Card Kingdom, near mint, their price list as of .
Verity Circle 
Enchantment · Rare · Ravnica Allegiance · #58
Whenever a creature an opponent controls becomes tapped, if it isn't being declared as an attacker, you may draw a card.
{4}{U}: Tap target creature without flying.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $1.79 to $13.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica Allegiance | 58 | Rare | $1.79 | $13.99 |
| Crimson Vow Commander | 116 | Rare | $1.99 | — |
3 rulings from Wizards of the Coast
- 25 January 2019If a creature enters the battlefield tapped, Verity Circle's first ability doesn't trigger.
- 25 January 2019For Verity Circle's first ability to trigger, the creature has to actually change from untapped to tapped. If an effect attempts to tap a tapped creature, but it was already tapped at the time, the ability won't trigger.
- 25 January 2019If a creature with vigilance is declared as an attacker and then becomes tapped while it's attacking, Verity Circle's first ability triggers.