Sliver Swarm

Sliver Swarm is a 100-card Commander precon from Commander Masters, released August 4, 2023. It is led by Sliver Gravemother, a five-color commander.

Sliver Gravemother

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.)

The list runs 37 lands and 43 creatures, and its nonland cards average 3.16 mana. At today's TCGplayer prices the whole deck's cards come to about $212.16, and the most valuable is Sliver Gravemother at $22.14.