Crystalline Crawler [Commander 2016] Pro Tour Promos Set: Unlimited Edition Type: Instant

Set: Unlimited Edition Type: Instant Rarity: Rare Cost: {B}{B} Look at target opponent's hand and choose a card from it

Set: Dominaria Prerelease Promos Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control

Set: From the Vault: Realms Type: Land Rarity: Mythic {T}: Add {C}{C}

Drawn by power

but my host would casually push it down before I could make out what it was

Crystalline Crawler [Commander 2016] Pro Tour Promos Set: Unlimited Edition Type: InstantSet: Commander 2016 Type: Artifact Creature Construct Rarity: Rare Cost: {4} Converge Crystalline Crawler enters the battlefield with a +1 +1 counter on it for each color of mana spent to cast it. Remove a +1 +1 counter from Crystalline Crawler: Add one mana of any color. {T}: Put a +1 +1 counter on Crystalline Crawler.