frozen zombie polar bear variant

A frozen zombie polar bear variant. Like the zombie horse and husk camel, it can carry riders. You can now equip saddles to normal polar bears—though you need fish to tame them first—and once tamed, two players can ride and attack from them; it is a highly effective mount in combat. Upon death, it drops a polar bear claw, which increases damage when used with items like swords. Additionally, two players will now be able to ride horses as well, since the frozen zombie polar bear and husk camel can carry two riders, making the zombie horse seem too weak by comparison.