Heidrun, Wild Spiritmaster

Reach, Vigilance, Lifelink
When Heidrun enters the battlefield or attacks,
choose one. Create a creature token with
the chosen characteristics.
•2/2 green Wolf Spirit with "{t}: Target
nontoken attacking creature gets +2/+0."
•0/1 white Unicorn Spirit with "{t}: Target
creature gets +1/+1 until end of turn.
Regenerate it."
•1/1 blue Bird Spirit with flying
and "{t}: Scry 1."