Siege units

Few examples of ammo
Magma Cream = Flames
Gold Nugget = Dezombification
Iron Nugget = extra damage
Rotten Flesh = Poison
Nether wart = wither
Gunpowder = Explosion (Catapult only)
Redstone = Electricity
Snowball = Slowness
Coal = Blindness

Name: Ballista
Type: Neutral
HP: 12
Attack: 5
Abilities: Fires arrows with effect dependent on ammo
Spawns: Craftable
Drops: none

Name: Catapult
Type: Neutral
HP: 16
Attack: 8
Abilities: Fires arrows with effect dependent on ammo
Spawns: Craftable
Drops: none

Name: Catallista
Type: Neutral
HP: 16
Attack: 5
Hybrid of Catapult and Ballista
Abilities: Fires arrows with effect dependent on ammo
Spawns: Craftable through combiner
Drops: none

Name: Hwacha
Type: Neutral
HP: 24
Attack: 5
Hybrid of Catapult and Ballista
Abilities: Fires six arrows with effect dependent on ammo
Spawns: Craftable through combiner
Drops: none