Elixa, High Alchemist

+1: Create a tapped Vital Elixir artifact token with "As long as this artifact is untapped, you gain one life at the beginning of your upkeep."
-2: Create a tapped Corrosive Elixir artifact token with "As long as this artifact is untapped, creatures your opponents control get -1/-1".
-7: Create a tapped Storm Elixir artifact token with "As long as this artifact is untapped, creatures you control have Annihilator 1."