1 reincarnated as a sapling

so I was a pilot in my previous life and one day my engines failed and I went down to the ocean and hit my head on glass

I was in the void and suddenly a person came and said I am God and I am here to reincarnate you into something or someone with a system

anyway bye

so thats where I am right now and I think I am underground I don't really know I will just ask my system where am I or what am I

"you are a seed and you are underground you are a tree" oh ok are there skills in this world?

"yes there are" how do I use them

you just think about it and it happens

1 year later

I am a tree now let's see if I can use magic let's try nature magic ok think and it happens he grows a huge vein and controls it to slap a bunny

you can now evolve into groot would you like to evolve