UR Aggro applies pressure through cheap red creatures like Scalding Viper, Hired Claw, and Hearthborn Battler backed by burn spells, so your priority is surviving early and trading efficiently. Pyroclasm is an excellent sweeper here, killing most of their one- and two-drops in one sorcery while you stabilize behind your removal suite. Voice of Victory gives you a proactive threat that can also gain life to offset early burn damage, buying more time to find your sweepers. Flashfreeze comes in to counter their key red spells and creatures at instant speed, which is particularly relevant against Vibrant Outburst and Colorstorm Stallion. Consult the Star Charts and Improvisation Capstone are too slow and low-impact against a deck trying to end the game by turn four.