>>530448474
Just hard grind tier 16s. No need to alch or anything. Plug them into your map device and clear the first 1/3rd of the map and leave. Repeat this process if you're really looking to spawn him right now.

There's a theory about how we should mayble block all league mechanics to help influence this spawn rate but I can't confirm that.

Just "chuck-n-go". You will get him.