Meteor Salvo

Surge {c}{c} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)
Buyback {c}{c} (You may pay an additional {c}{c} as you cast this spell. If the buyback cost was paid, put this spell into its owner’s hand instead of into that player’s graveyard as it resolves.)
Destroy target land, gain life equal to the number of lands put in graveyards this turn.