Cheapest priced copy (Revised Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Paralyze 
Enchantment — Aura · Common · Fifth Edition · #185
Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If the player does, untap the creature.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
13 printings · $0.35 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Unlimited Edition | 120 | Common | $1.29 | — |
| 30th Anniversary Edition | 116 | Common | $0.99 | — |
| 30th Anniversary Edition | 413 | Common | $44.99 | — |
| Revised Edition | 121 | Common | $0.35 | — |
| Fourth Edition Foreign Black Border | 151 | Common | — | — |
| Fourth Edition | 151 | Common | $0.35 | — |
| Fifth Edition | 185 | Common | $0.35 | — |
| Collectors' Edition | 120 | Common | $3.49Out of stock | — |
| Intl. Collectors' Edition | 120 | Common | $2.99 | — |
| Foreign Black Border | 121 | Common | — | — |
| Limited Edition Alpha | 119 | Common | $34.99 | — |
| Limited Edition Beta | 120 | Common | $12.99 | — |
| Summer Magic / Edgar | 121 | Common | — | — |
5 rulings from Wizards of the Coast
- 4 October 2004The creature can only be untapped using Paralyze once per turn.
- 4 October 2004Paying the cost is optional.
- 4 October 2004Two Paralyzes are not cumulative. Paying either one will untap the creature.
- 4 October 2004Paralyze can be cast targeting a creature which is already tapped.
- 16 September 2007This is a change from the most recent wording. As was the case in the past, Paralyze itself has the last triggered ability, rather than granting that ability to the enchanted creature.