Pokeball plugin possible?

So I am just about to start a HUGE project where a player will use one of the new spawn eggs to spawn a mob and duel with other players mobs. I am just wondering if this is at all possible. Looking through the API, I have found some things useful that I can use:

http://jd.bukkit.org/apidocs/org/bu...tml#setTarget(org.bukkit.entity.LivingEntity)
Sets the target of the mob, however how can I get the living identity from the two eggs? Maybe make it so a player can only throw the eggs when there are no other monsters within a 30 block radius and then just get the two entities.


http://jd.bukkit.org/apidocs/org/bukkit/entity/LivingEntity.html#damage(int)
Deals the given amount of damage to this entity, from a specified entity (but how can I use this to change a mobs damage to the other mob)

http://jd.bukkit.org/apidocs/org/bukkit/event/entity/CreatureSpawnEvent.SpawnReason.html#EGG
Get the event-spawning event from the egg throw, but how can I restrict this to check for certain things before allowing the event (probably just an eventcancel but any discussion on this is still appreciated).

 

Eggs as balls? nah, use PokeSlime. xD

1. As you spawn both entities you can set the targets.

2. Just damage the entity with .damage(amount); ?

3. As I sayed: Use (fork, or work together with me) PokeSlime...