Precons with Sliver Gravemother

Sliver Gravemother

Legendary Creature — Sliver

The "legend rule" doesn't apply to Slivers you control.Each Sliver creature card in your graveyard has encore , where X is its mana value.Encore (, 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.)

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