Snow Globe

The Snow Globe can be obtained from opening presents, but only after defeating the Wall of Flesh and activating hardmode. It summons the Frost Legion, an event very similar to Goblin Invasion. There are three kinds of enemies that will be summoned, all snowmen:
 * Snow Balla, which throws snow balls
 * Mister Stabby, who has a knife
 * Snowman Gangsta, with a Tommy Gun.