When this creature enters, you draw a card and you lose 1 life.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
This creature attacks each combat if able.

Target creature gets +2/+2 until end of turn. If it's blocking, instead put two +1/+1 counters on it.
Cycling (, Discard this card: Draw a card.)

This spell costs less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

If a hot source you control would deal damage to a permanent or player, it deals that much damage plus 1 instead. (Something is hot if it has hot things in its art, like fire or explosions.)
, Sacrifice this enchantment: It deals damage equal to twice the number of hot cards in your graveyard to target creature or planeswalker.

Flying
: This creature gains first strike until end of turn. ( can be paid with one mana from a snow source.)

When this creature dies, you gain 1 life and draw a card.
When this creature is exiled from the battlefield while you're activating a craft ability, you gain 1 life and draw a card.

Flying
When this creature enters, return a white or blue creature you control to its owner's hand.

Target creature gains double strike until end of turn.
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

Flying
Whenever you cast a kicked spell, scry 2.

Duggan's power and toughness are each equal to the number of cards in your hand.
Whenever Duggan enters or attacks, investigate.
The Most Important Punch in History — , : Duggan deals damage equal to twice its power to another target creature. Activate only once.

Flying, vigilance

: Destroy target tapped creature.

Enchant creature
Enchanted creature gets +2/+2 and has flying.
When enchanted creature dies, create a 2/2 white Griffin creature token with flying.

(: Add .)

Hornet Sting deals 1 damage to any target.

Each other non-Human creature you control enters with an additional +1/+1 counter on it.

Enchant land
Enchanted land has ": Add two mana of any one color."

When Metalhead enters, return up to one other target artifact or creature to its owner's hand.
, Sacrifice another artifact: Put a +1/+1 counter on Metalhead. He gains menace and haste until end of turn.