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.)
Mana cost
W
U
B
R
G
Mana value
5
Printings
From
$28.94
EDHREC rank
#6251
Decks
14
Buy
14 decks lead with Sliver Gravemother. Newest first.