Snow Globe

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

The Frost Legion should only be summoned once the player has acquired hardmode gear; they are considerably stronger than the Goblin invasion.