Resources

Magic: The Gathering Oracle Changes

Coldsnap to Time Spiral (Single Change View)

Changes involving "buyback"

Old card (Coldsnap) New card (Time Spiral)

Lab Rats

{B}

Sorcery

Buyback {4} (You may pay {4} in addition to any other costs as you play this spell. If you do, put Lab Rats into your hand instead of your graveyard as part of its resolution.)

Put a 1/1 black Rat creature token into play.

Lab Rats

{B}

Sorcery

Buyback {4} (You may pay an additional {4} as you play this spell. If you do, put this card into your hand as it resolves.)

Put a 1/1 black Rat creature token into play.