Cloudkill

Condition: Near Mint
Color: Black
Card Text: All creatures gets -X/-X until end of turn, where X is the greatest mana value of a commander you own on the battlefield or in the command zone.
Rarity: U
Cost: 4BB
Card Type: Sorcery
Artist: David Szabo
Name: Cloudkill
Finish: Regular
Card Number: 121/361 
Set Name: Commander Legends: Battle for Baldur's Gate