Treefolk and elves share a common interest in the forests, but really the elves just feel at home with the view from above.

Foundations Jumpstart

Ambassador Oak

When Ambassador Oak enters, create a 1/1 green Elf Warrior creature token.

When this creature enters, create a 1/1 green Elf Warrior creature token.

When Ambassador Oak enters the battlefield, create a 1/1 green Elf Warrior creature token.

When Ambassador Oak comes into play, put a 1/1 green Elf Warrior creature token into play.