Mardu Energy is a fast, wide aggro-midrange deck that wins through energy synergies, Ragavan stealing resources, and Goblin Bombardment as a sacrifice outlet to dodge removal. Ensnaring Bridge is our premier sideboard card here—since we deploy our hand quickly to ramp into threats, we can lock their entire creature army out of combat fairly reliably. Torpor Orb shuts off the ETB value engines that would otherwise rebuild their board post-wrath: Ranger-Captain of Eos loses its tutor effect, Seasoned Pyromancer loses its loot and token generation, and Sephiroth's clone token is suppressed. Chalice of the Void on one is critical—leave both copies in—as it blankets Ragavan, Galvanic Discharge, Voice of Victory, and the bulk of their interaction, while Trinisphere further taxes their low-curve spells. Thought-Knot Seer and Karn, the Great Creator provide disruption and redundant access to The Filigree Sylex as a sweeper that can reset a board of cheap creatures and Goblin Bombardment at a favorable mana investment.