Paralyze

Enchantment - Aura, B (1)
Enchant creature
When Paralyze comes into play, 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 he or she does, untap the creature.¹
Illus. Anson Maddocks

Crystal Keep Rulings Summaries

• It can only be untapped using Paralyze once per turn. [D'Angelo 2000/03/03]
• Two Paralyzes are not cumulative. Paying either one will untap the creature. [D'Angelo 2000/03/03]
• Paying the cost is optional. [D'Angelo 1994/04/01]
• The enchantment is a permanent. It does not leave once it is paid. This is a common mistake. [D'Angelo 1994/04/01]
• Because Paralyze is paid during upkeep, the creature does avoid restrictions on the untap phase such as Smoke, and can untap when Stasis is in effect, or untap around the Meekstone. [bethmo 1994/04/01]
• The creature becomes tapped just after Paralyze comes into play (see Rule 410.10a), not when it is declared. [Aahz 1994/07/29]
• Paralyze can be played on creatures which are already tapped. [D'Angelo 1994/06/01]
• Note - Also see Aura, Rule G1.30.
• Note - Also see Comes Into Play Abilities, Rule 410.10a.
• Note - This card was of type "Enchant Creature" until Oracle 2005/08/01.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (6/24)	Fifth Edition (Common) Fourth Edition (Common) Revised Edition (Common) Unlimited Edition (Common) Limited Edition (Beta) (Common) Limited Edition (Alpha) (Common)