Mobile assassins
These champions can quickly close the gap and burst Brand before he casts his spells. Their mobility also allows them to dodge key abilities, preventing Blaze application and heavily reducing his DPS. Brand becomes unable to fulfill his role in fights.
How the champion adapts. Play far back, anticipate engages, and save stun for defense rather than initiation.
Spread compositions
When enemies stay spread out, Brand loses much of his value. His ultimate bounces less and his AoE hits fewer targets. This drastically reduces his overall impact and turns his kit into simple poke without real threat.
How the champion adapts. Look for isolated poke angles and wait for grouping mistakes.
Fast engage
Champions with instant engage force Brand to react under pressure. He has no time to apply stacks or position properly. This reduces his contribution to near zero if the engage is well executed.
How the champion adapts. Anticipate engage timings and stay at maximum range.