Each other creature you control that's a Werewolf or a Wolf gets +1/+1.
At the beginning of your end step, create a 2/2 green Wolf creature token.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Howlpack Alpha.

Howlpack Wolf can't block unless you control another Wolf or Werewolf.

Whenever Hydra Omnivore deals combat damage to an opponent, it deals that much damage to each other opponent.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy.
Equip

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.
Draw a card.

Devoid (This card has no color.)
: Each creature with toughness greater than its power can't block this turn. ( represents colorless mana.)

Whenever an opponent activates an ability of an artifact, creature, or land that isn't a mana ability, Immolation Shaman deals 1 damage to that player.
: Immolation Shaman gets +3/+3 and gains menace until end of turn.

Whenever you cast your second spell each turn, Incursion Specialist gets +2/+0 until end of turn and can't be blocked this turn.

Haste
, : Exile target instant or sorcery card from your graveyard.
, , Sacrifice Izzet Chemister: Cast any number of cards exiled with Izzet Chemister without paying their mana costs.

Search your library for up to two creature cards and reveal them. Put one into your hand and the other into your graveyard. Then shuffle your library.

Jarad, Golgari Lich Lord gets +1/+1 for each creature card in your graveyard.
, Sacrifice another creature: Each opponent loses life equal to the sacrificed creature's power.
Sacrifice a Swamp and a Forest: Return Jarad from your graveyard to your hand.

Flying
When Keiga, the Tide Star dies, gain control of target creature.

Choose a creature at random, then destroy the rest.

, : Draw a card.
, : Copy target instant or sorcery spell you control with converted mana cost X. You may choose new targets for the copy.

Whenever a Sliver you control attacks, defending player loses 1 life.

When Legion's Landing enters the battlefield, create a 1/1 white Vampire creature token with lifelink.
When you attack with three or more creatures, transform Legion's Landing.

Destroy all creatures, then search target opponent's library for up to three creature cards and put them into their graveyard. Then that player shuffles their library.

Trample
Revolt — Lifecraft Cavalry enters the battlefield with two +1/+1 counters on it if a permanent you controlled left the battlefield this turn.