Cheapest priced copy (Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Lawmage's Binding 
Enchantment — Aura · Common · Ravnica Allegiance · #190
Flash
Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart | 453 | Common | $0.35 | — |
| The List | RNA-190 | Common | $0.35 | — |
| Ravnica Allegiance | 190 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 25 January 2019Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keyword abilities are activated abilities and will have colons in their reminder text. Triggered abilities (starting with “when,” “whenever,” or “at”) are unaffected by Lawmage’s Binding.
- 25 January 2019Once a creature has attacked or blocked, casting Lawmage’s Binding won’t remove that creature from combat. Similarly, once a creature’s ability has been activated, casting Lawmage’s Binding won’t counter that ability.