Minecraft to generate loaded creepers?

I'm trying to get the head of an NPC at Minecraft in Survival mode. It means you have to have them killed by a loaded Creeper. But nowhere do I find how to find or create such a loaded creeper. Does anyone know how to do this?

/ Thunder aiming at Creeper, aethergeladen. Zack.

Are very rare he must first be struck by lightning

For this a creeper must be struck by lightning. Very unlikely.

With a trident when it rains because you need the enchantment discharge and then you shoot a lightning on the creeper

A loaded creeper occurs when a creeper is struck by lightning. Of course this is relatively unlikely but with the 1.14 one can shoot lightning bolts with a trident (if the corresponding magic is on it).

I think with "Survival Mode" he also means that he does not want to cheat…

Right