Based on actual mythology, not the mcu.

***

A twisted tree of silver and green
That changes fates decided.

It grows for none, not even one
It alters things provided.

Its branches groan, its strong limbs moan
As the worlds collide above.

The gods fight, with their holy might,
Looking for those they love.

The Realms nine, of those you find
Many of terrible power.

In those lands the Aesir stand,
And mortals join the hour.

Oh, that twisted tree wrought of silver and green
That held while many rage

The meadows wilter, oh, the green and silver
Stays and makes a cage.

It holds a snake, great sorrow it'll make
Once it has been freed.

And, in chains, a rage-filled reign
A wolf consumed by greed.

When they're loose, the hangman's noose
Tightens around Odin's kin.

Loki will fight, all things despite,
On the side of who will win

Not the good, for he's misunderstood
And the evil ones seem softer

He plays a part in the start
Of letting evil prosper.

Thor will try though he will die
Along with all his friends

To save the realms, from ants to elms,
The tree begging for an end.

Loki is left, Heimdall he met
To fight, two sides in war

But the end is nigh, friend, don't you cry,
For the pieces will be here once more.

A new king, a new, better wing
To fly into the horizon

The old ones dead, a young group ahead
As the mortal ones now are rising

And still, the tree, twisted in silver and green,
Stands as the war rages amok

The tree, the tree, will never be free
As around it creates Ragnarok.