B.E.S. Crystal Core

[RodExe]

"When this card is Normal Summoned, put 3 counters on it. This card cannot be destroyed by battle. If this card attacks or is attacked, remove 1 counter from this card at the end of the Damage Step. If you cannot, destroy it. Once per turn, during your Main Phase, you can change 1 face-up Attack Position monster your opponent controls to face-up Defense Position."

What happens if I Special Summon it? It will appear on the field without any counters, so it will get destroyed by its own effect? If it doesn't then after fighting with ANYTHING it will be destroyed, right? or will it be destroyed during/before the battle (in other words can it still kill monsters before auto-destruction?

Oh, and what happens if I use some card to prevent/protect from battle, can Waboku, Scrap-Iron Scarecrow and maybe Aegis of the Ocean Dragon Lord protect this card from being destroyed after battle. As far as I know Scrap will because it negates the battle, Waboku won't because it still battled and Aegis I don't know (does Aegis protects my monsters from destroying themselves too?)

[DARKPLANT RISING]

Use Q and A.

[Great Unclean One: VK]

It's destroyed by it's own effect since it has no counter.

Ether way when it's SS, it'll die.

By battle or effect.

Even if you Waboku and have it fight, it'll still die due to the effect.