Emissary Green is a rare Legendary Creature — Human Advisor card from Ravnica: Clue Edition (CLU), collector number 5. Current market price: $2.14, TCGplayer market prices via Scryfall.
Whenever Emissary Green attacks, starting with you, each player votes for profit or security. You create a number of Treasure tokens equal to twice the number of profit votes. Put a number of +1/+1 counters on each creature you control equal to the number of security votes.