Kaln, heir of Brudiclad

When Kaln, heir of Brudiclad enters the battlefield, create X 1/1 Myr creature tokens that are all colors and have "{t}: Add one
mana of any color."
{x}{w}{u}{b}{r}{g}: Populate X times. (To populate, create a token that's a copy of a creature token you control. Do this X times.)