S.C. Code § 12-59-310
The State of South Carolina renounces all title by forfeiture for nonpayment of taxes to each and every parcel of land in the several counties of the State listed on the forfeited land record on December 24, 1887 and will treat them hereafter as the lands of the former owner, his heirs or assigns. But this renunciation of title is upon the reservation and condition that the State may hereafter collect by suit at law or other legal method from such lands a sum equal to the aggregate amount of all annual assessments for taxes with the penalties that might and would have been assessed and charged against such lands in case they had never been declared delinquent and forfeited. The retention of the possession and use of such lands for ninety days after December 24, 1887 by such former owner, his heirs or assigns shall be sufficient evidence of his acquiescence in and acceptance of the reservations and conditions of such renunciation of title.
S.C. Code § 12-59-310