Neon

Channel 9 Plasma orbs (the energy orbs) in a single turn - Defect only, and one of the fiddlier feats. The main Plasma source is Meteor Strike (channels 3 Plasma), so you're looking at playing it several times in one turn - three casts gets you the 9 - which means a big energy setup: energy relics plus energy-gain so you can afford the 5-cost card repeatedly. Chaos (channels a random orb) can chip in the odd Plasma too. Build a deliberate high-energy Meteor Strike run for this rather than hoping it happens.