Omnath, Locus of Birb

Whenever Omnath, Locus of Birb enters or leaves the battlefield create a 1/1 red and white Birb token with flying and "Whenever this creature dies it deals 1 damage to any target."
Landfall — Create a 1/1 red and white Birb token with flying and "Whenever this creature dies it deals 1 damage to any target."
Sacrifice 69 Birb tokens: If an opponent does not control a Birb, you win the game.