Whenever this creature enters or transforms into Huntmaster of the Fells, create a 2/2 green Wolf creature token and you gain 2 life.
At the beginning of each upkeep, if no spells were cast last turn, transform this creature.

Rally — Whenever this creature or another Ally you control enters, creatures you control gain haste until end of turn.

Destroy target creature or planeswalker.

Enchant nonland permanent
Enchanted permanent is a Treasure artifact with ", Sacrifice this artifact: Add one mana of any color," and it loses all other abilities. (If it was a creature, it's no longer a creature.)

Flying
When this creature enters, target creature gets +1/+1 and gains flying until end of turn.

, : Add .

Firebolt deals 2 damage to any target.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Other artifact creatures you control have haste.
Whenever one or more artifact creatures you control attack, Alibou deals X damage to any target and you scry X, where X is the number of tapped artifacts you control.

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached.)
When this permanent becomes the target of a spell or ability, sacrifice it.
Enchanted creature gets +4/+4 and has "When this creature becomes the target of a spell or ability, sacrifice it."

+2: You may sacrifice a creature. If you do, search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put it onto the battlefield, then shuffle.
+1: Mill five cards, then put any number of creature cards milled this way into your hand.
−1: Create a 4/4 green Rhino Warrior creature token.

Each enchantment deals 2 damage to its controller, then each Aura attached to a creature deals 2 damage to the creature it's attached to.

: This creature gets +1/+0 until end of turn.

Equipped creature gets +4/+2 and doesn't untap during its controller's untap step.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Enchant creature
Enchanted creature can't attack or block.
: Exile enchanted creature.

This artifact enters with three arrowhead counters on it.
At the beginning of your upkeep, if there are no arrowhead counters on this artifact, sacrifice it.
, Remove an arrowhead counter from this artifact: Put a -1/-1 counter on target creature.

Defender, reach
Channel — , Discard this card: Destroy target creature with flying.

Enchant noncommander creature
You control enchanted creature.
Enchanted creature gets +2/+2 and can't be blocked unless it's attacking its owner or a permanent its owner controls.

Lightning Strike deals 3 damage to any target.

Flying, hexproof from multicolored
Whenever Niv-Mizzet deals combat damage to a player, it deals X damage to any target, target player draws X cards, and you gain X life, where X is the number of different color pairs among permanents you control that are exactly two colors.

, : Target player loses 1 life and reveals their hand.