Cast this spell only during the declare blockers step.
Target unblocked attacking creature becomes blocked. (This spell works on creatures that can't be blocked.)
Draw a card at the beginning of the next turn's upkeep.
10/4/2004 Is not very useful against Trample creatures since Trample damage comes through as if a zero toughness creature blocked the Trampler.
10/4/2004 Works on creatures that can’t be blocked and on creatures that have special blocking requirements.