Sliver Gravemother [Commander Masters] Open the Helvault Set: Antiquities Type: Artifact Creature

Set: Antiquities Type: Artifact Creature — Shapeshifter Rarity: Rare Cost: {6} {0}: Urza's Avenger gets -1/-1 and gains your choice of banding

In Gideon's hands

Maro-Sorcerer's power and toughness are each equal to the total number of cards in all players' hands

Look at your opponent's hand and choose a number of Pokemon you find there up to the number of P Energy attached to Gengar

Set: Legends Type: Enchantment Rarity: Rare Cost: {2}{W}{W} At the beginning of each player's upkeep

Sliver Gravemother [Commander Masters] Open the Helvault Set: Antiquities Type: Artifact CreatureSet: Commander Masters Type: Legendary Creature Sliver Rarity: Mythic Cost: {W}{U}{B}{R}{G} 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