| 10/4/2004 |
If you have zero or negative life, half your life is zero, so it costs nothing to use the ability. |
| 10/4/2004 |
When it turns into a creature, it is no longer an enchantment. |
| 8/1/2008 |
A noncreature permanent that turns into a creature can attack, and its  abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature. |
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