Clock Tower Prison (DP05-EN016) - Duelist Pack 5: Aster Phoenix 1st Edition

Put 1 Clock Counter on this card during each of your opponent''s Standby Phases. While there are 4 or more Clock Counters on this card, you do not take any Battle Damage. When this card with 4 or more Clock Counters is destroyed and sent to the Graveyard, Special Summon 1 Destiny Hero - Dreadmaster from your hand or Deck.