27 cards where the illustration contains “burst-of-energy”

Aura Mutation (Invasion #232)
Aura Shards (Invasion #233)
Aurelia's Fury (Gatecrash #144)
Baral's Expertise (Aether Revolt #29)
Casualties of War (War of the Spark #187)
Combust (Magic 2011 #130)
Counterspell (Eternal Masters #43)
Counterspell (Modern Horizons 2 #308)
Deafening Clarion (Guilds of Ravnica #165)
Divine Purge (Alchemy: Innistrad #4)
Dream Fracture (Eventide #19)
Endless Swarm (Saviors of Kamigawa #129)
Fell the Mighty (Commander 2014 #7)
Flash Counter (Eighth Edition #78)
Font of Vigor (Journey into Nyx #11)
For the Family (Streets of New Capenna #146)
Inscription of Insight (Zendikar Rising #61)
Iridian Maelstrom (Dominaria United Commander #12)
Mana Flare (Limited Edition Alpha #162)
Negate (Morningtide #43)
Puncture Bolt (Shadowmoor #102)
Resolute Strike (Zendikar Rising #35)
Rush of Knowledge (Scourge #49)
Searing Meditation (Ravnica: City of Guilds #226)
Smash to Smithereens (Shadowmoor #107)
Urza's Ruinous Blast (Dominaria #39)
Violent Ultimatum (Shards of Alara #206)

The message was clear to Sorin—time to search for something else.