Enchantment - Aura, U (1) Enchant creature Whenever enchanted creature attacks, if its power is 2 or less, it's unblockable this turn. Forecast - {1}{U}, Reveal Writ of Passage from your hand: Target creature with power 2 or less is unblockable this turn. (Play this ability only during your upkeep and only once each turn.)1
Illus. Luca Zontini
When the Forecast ability resolves or when the triggered ability resolves, you check the creature's power. If it's 2 or less then it becomes unblockable for that turn, even if its power is increased after that. [D'Angelo 2006/09/25]