Ancient Greenwarden (Extended Art) [Zendikar Rising] Game Genie that player discards that card

that player discards that card

each opponent sacrifices a nontoken creature or planeswalker

It's even got a bonus compartment in the bottom that easily fits 10-12 dice

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Promos Type: Creature — Ooze Rarity: Rare Cost: {X}{G} Trample

Ancient Greenwarden (Extended Art) [Zendikar Rising] Game Genie that player discards that cardSet: Zendikar Rising Type: Creature Elemental Rarity: Mythic Cost: {4}{G}{G} Reach You may play lands from your graveyard. If a land entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.