Les cinq cartes Return to Dust, Careful Consideration, Haunting Hymn, Sulfurous Blast et Might of Old Krosa, de l'édition Time Spiral, forment un cycle qui a inspiré la mécanique Addenda apparue dans l'édition Ravnica Allegiance.

Source ("This is a cycle I'd designed during Time Spiral because I was trying to find different ways to play with the concept of time.")