mtg energy counter cards Expanding Your Horizons: What card can double energy

Sacrifice after III.) I Judgment Bolt This creature deals damage equal to the number of noncreature, nonland cards in your graveyard to target creature an opponent controls

Endless Atlas gives you constant card draw so long as you have three lands with the same name, War Room lets you pay one life to draw a card, and Minas Tirith draws a card so long as you attacked with at least two creatures

For this deck, though

Buy Rise of the Floodborn's Amethyst and Steel Starter Deck on Zatu.

It doesnt have to go in zombie dedicated decks, but if it does it works even better, as each upkeep, you can scry equal to the number of zombies you control and deal damage to each of your opponents