When the prey in Krosa no longer satisfied them, the beasts began to hunt their hunters.

Beast

Tarkir: Dragonstorm Commander Tokens

Aetherdrift Commander Tokens

"When the land is angry, so are they."
—Nissa Revane

Rampaging Baloths

Trample
Landfall — Whenever a land you control enters, you may create a 4/4 green Beast creature token.

Somberwald Beastmaster

When Somberwald Beastmaster enters, create a 2/2 green Wolf creature token, a 3/3 green Beast creature token, and a 4/4 green Beast creature token.
Creature tokens you control have deathtouch. (Any amount of damage they deal to a creature is enough to destroy it.)

When this creature enters, create a 2/2 green Wolf creature token, a 3/3 green Beast creature token, and a 4/4 green Beast creature token.
Creature tokens you control have deathtouch. (Any amount of damage they deal to a creature is enough to destroy it.)

Hunting Pack

Create a 4/4 green Beast creature token.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Beast Attack

Create a 4/4 green Beast creature token.
Flashback {2}{G}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

"What do you want to be, now that you're grown up?"
—Yolov, Simic bioengineer

Combine Chrysalis

Creature tokens you control have flying.
{2}{G}{U}, {T}, Sacrifice a token: Create a 4/4 green Beast creature token. Activate only as a sorcery.

"Werewolves leave tracks. Vampires leave wrung-out corpses. This is something else."
—Paulin, trapper of Somberwald

Shadowbeast Sighting

Create a 4/4 green Beast creature token.
Flashback {6}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Herd Baloth

Whenever one or more +1/+1 counters are put on this creature, you may create a 4/4 green Beast creature token.

Baloth Cage Trap

If an opponent had an artifact enter the battlefield under his or her control this turn, you may pay {1}{G} rather than pay Baloth Cage Trap's mana cost.
Create a 4/4 green Beast creature token.

If an opponent had an artifact enter the battlefield under their control this turn, you may pay {1}{G} rather than pay this spell's mana cost.
Create a 4/4 green Beast creature token.

Domri, Chaos Bringer Emblem

At the beginning of each end step, create a 4/4 red and green Beast creature token with trample.