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 - $28.30
Lightly Played - $26.90
Moderately Played - $25.50
Heavily Played - $22.70
Damaged - $18.40
NM-Mint Non English - $28.30
Lightly Played Non English - $26.90
Moderately Played Non English - $25.50
Heavily Played Non English - $22.70
Damaged Non English - $18.40
Foil Prices
NM-Mint Foil - $45.50
Lightly Played Foil - $43.20
Moderately Played Foil - $40.90
Heavily Played Foil - $36.40
Damaged Foil - $29.60
NM-Mint Foil Non English - $45.50
Lightly Played Foil Non English - $43.20
Moderately Played Foil Non English - $40.90
Heavily Played Foil Non English - $36.40
Damaged Foil Non English - $29.60