Some men Lightning Bolt, favoring efficiency and timing. Some men Warp World, preferring style and flash.

Some men just want to watch the world burn. They play this.

For a card this old, this is actually a fairly costed. The fact that it indiscriminately deals 6 damage to all creatures, flying or otherwise, gives it some utility and board-clearing ability. It's also instant, which can spell disaster for an opponent playing their combat tricks. It can also be used spitefully when you are about to lose, and can be downright mean in multiplayer. Even though you are oftentimes better off using targeted X-spells against one player, the damage this deals can be unreal against multiple opponents, especially if you are running Furnace of Rath and the like.