Notorious Chase

Indestructible, Hexproof, Stand (This creature is
linked with another creature. They attack at the same
time, and if that creature dies, sacrifice this creature.
This creature can't be blocked, except by another Stand)
When this creature's user dies, this creature does
not. It gains base power and toughness 12/12 and
deals damage equal to its power to all other
creatures before sacrificing itself.