Card
Seedtime
Instant · MV 2.0
Oracle text
Cast this spell only during your turn. Take an extra turn after this one if an opponent cast a blue spell this turn.
Rulings
2004-10-04 · You only get an extra turn if an opponent cast a blue spell this turn prior to this spell resolving. Note that "casting" a spell only requires it to be announced, so an unresolved spell still counts as having been cast.