R10 EC: "Juul Addiction"
Optional. Play 20 matches against shockcannon using unrestricted number of upgrades but only life cards (any deck mark allowed). If you win at least 6 of the 20 matches, add 12 copies of alchemy cards of your choice to your vault. You may only choose up to 3 different "flavors" to add. If you lose, your element is eliminated from War.
R10-12 SEC: "Peer Pressure"
If your team opts in for the EC of the round, every other team left in War must also participate in the EC of the round.