Voracious Fell Beast

Flying
When this creature enters, each opponent sacrifices a creature of their choice. Create a Food token for each creature sacrificed this way. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")

Questing Beast

Vigilance, deathtouch, haste
Questing Beast can't be blocked by creatures with power 2 or less.
Combat damage that would be dealt by creatures you control can't be prevented.
Whenever Questing Beast deals combat damage to an opponent, it deals that much damage to target planeswalker that player controls.

Bashful Beastie

When this creature dies, manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)

Axebane Beast

Beast

Beast of Burden

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

Primal Huntbeast

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Molder Beast

Trample
Whenever an artifact is put into a graveyard from the battlefield, this creature gets +2/+0 until end of turn.

Longhorn Firebeast

When this creature enters, any opponent may have it deal 5 damage to them. If a player does, sacrifice this creature.

Strength of the Pack

Put two +1/+1 counters on each creature you control.

Symbiotic Beast

When this creature dies, create four 1/1 green Insect creature tokens.

Needletooth Pack

Morbid — At the beginning of your end step, if a creature died this turn, put two +1/+1 counters on target creature you control.

Bedhead Beastie

Menace (This creature can't be blocked except by two or more creatures.)
Mountaincycling {2} ({2}, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)

Beastmaster Ascension

Whenever a creature you control attacks, you may put a quest counter on this enchantment.
As long as this enchantment has seven or more quest counters on it, creatures you control get +5/+5.

Dalkovan Packbeasts

Vigilance
Mobilize 3 (Whenever this creature attacks, create three tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.)

Gruul Ragebeast

Whenever this creature or another creature you control enters, that creature fights target creature an opponent controls.