World Tree Maintenance

At the beginning of your end step, create one of the following depending on how many Realm lands you control.

0-4: Create a 1/1 Spirit Squirrel creature token with
"{t}: Add one mana that is the colour of this token."
You choose which colour token to create.

5-9: Create a 5/5 Realm Ripper creature token with
menace and "This creature is all colours."