Crystal Maiden vs Ursa

How this matchup plays

Feeling your chase completely fall apart is the typical experience for an Ursa here. He needs to stay on a target to build damage, but Crystal Maiden's entire kit is designed to prevent that from a safe distance. A long-range Crystal Nova slows him down, and a Frostbite will stop him cold, allowing his target to get away or her team to collapse on him. Even with Enrage active, the status resistance only shortens these disables; it doesn't prevent them from landing in the first place, which is often enough to ruin his aggression.

This dynamic starts in the lane and continues all game. Ursa is forced to buy a Black King Bar much earlier than he might want to, but Crystal Maiden's spells have low cooldowns and can be used to bait the BKB out. Once it's down, he's a sitting duck again. She makes it incredibly difficult for Ursa to find solo pickoffs or even commit to teamfights, as her Freezing Field can zone him out or her basic spells can hold him in place for her cores to finish off.