Viaz, King of Beasts

Beasts you control get +1/+1
•Whenever a Plains enters the battlefield under
your control, create a 2/2 White Falcon Beast
Token with flying
•Whenever a Forest enters the battlefield under
your control, create a 3/3 Green Wolf Beast
Token with Vigilance
•Whenever a Mountain enters the battlefield
under your control, create a 4/4 red cerodon
Beast Token with trample