Sliver Gravemother [Commander Masters] Open the Helvault Maro-Sorcerer's power and toughness are

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

Set: Onslaught Type: Sorcery Rarity: Rare Cost: {6}{G}{G} Each player's life total becomes the number of creatures they control

In Gideon's hands

"Geralf's prowess continues to grow

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Promos Type: Legendary Creature — Beholder Rarity: Mythic Cost: {4}{U}{B} At the beginning of your upkeep

Sliver Gravemother [Commander Masters] Open the Helvault Maro-Sorcerer's power and toughness areSet: 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