Dwarven Warriors
Revised Edition — common
Creature — Dwarf Warrior
Dwarven Warriors rulings:
2004-10-04: The ability can be activated after a creature is blocked, but it has no effect. Once a creature is blocked, it can’t be unblocked.
2004-10-04: If you increase the power of the targeted creature after the ability resolves, it still can’t be blocked that turn.