Blade, The Immortal Sword

First strike
When Blade, The Immortal Sword attacks, you
may pay {2}{b/g} and 5 life to give Blade,
The Immortal Sword +5/+0.
If this is the fifth time this ability resolve
when Blade, The Immortal Sword deals damage
you gain that much life
Savor it in my place... Hmph!