Ghast

The Ghast is a flying Mob in Minecraft.

Strategies
The ghast is a flying mob Nether area. They can hover above plants or shoot explosive fireballs at them at half health. The fireball instant kill plants in a 3 X 3 area, but most of the time it flies off the screen without doing damage.

Just use lobbed-shot plants or anti-air plants against them. Don't use instant kills, they are too high to be hit.

You can also use a Sword to deflect their fireballs right back at them, but it will decrease your sword durability by 2.

Trivia

 * You can't physically hit them.