The “legend rule” doesn't apply to Slivers you control.
Each Sliver creature card in your graveyard has encore {X}, where X is its mana value.
Encore {5} ({5}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)
NM-Mint Foil - $1.00
Lightly Played Foil - $0.90
Moderately Played Foil - $0.80
Heavily Played Foil - $0.70
Damaged Foil - $0.50
NM-Mint Foil Non English - $1.00
Lightly Played Foil Non English - $0.90
Moderately Played Foil Non English - $0.80
Heavily Played Foil Non English - $0.70
Damaged Foil Non English - $0.50