Sentry's Approach

(Start the game with this tactic face up in the
command zone.)
You may cast this card from your command
Zone. If Sentry's Approach was cast from your
hand and you've cast another spell named
Sentry's Approach this game, you win the game.
Otherwise, put Sentry's Approach into its
owner's library seventh from the top and you
gain 7 life.