"Yggdrasil sampling that will absorb all the pollution we put out and in exchange would heal the world as it grows."

Make it sure it doesnt absorb like all the c02 or ice age momento

Maybe boost the oxygen levels or even produce mana

"Intuitive Geniuses like Forge to raise our civilization to Type II."

It would take awhile, and might depend on what format you basing it off

Science and technologies would have to be elevated to the stellar tier

Most important of all, the technological singularity to further boost the speed of development

Prob..

Firstly, anything I create will be soul forged and bound to me on an existential level.

I'd craft;

1. A map that has the capability to let me travel to everywhere and when.

2. A pill that grants Supernatural Body..

I would finally build my bipquanite idea, or my omni-fictional arsenal goggles