First strike, trample, lifelink

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
When you cast this spell, create two 1/1 green Insect creature tokens.

: Transform Kessig Prowler.

When Laboratory Brute enters the battlefield, mill four cards.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
When you cast this spell, you may put target nonland permanent on top of its owner's library.

Liliana's Elite gets +1/+1 for each creature card in your graveyard.

First strike, lifelink
At the beginning of the end step, if you gained 3 or more life this turn, transform Lone Rider.

Exile target creature. At the beginning of the next end step, return that card to the battlefield under its owner's control with a +1/+1 counter on it.

When an opponent casts a spell, sacrifice Lunar Force and counter that spell.

Enchant creature
Enchanted creature gets +2/+2 and has ", Sacrifice a permanent: This creature gains flying until end of turn."

Make Mischief deals 1 damage to any target. Create a 1/1 red Devil creature token. It has "When this creature dies, it deals 1 damage to any target."

Lifelink
Markov Crusader has haste as long as you control another Vampire.

Flying
Whenever you cast an instant or sorcery spell, Mercurial Geists gets +3/+0 until end of turn.

When Midnight Scavengers enters the battlefield, you may return target creature card with converted mana cost 3 or less from your graveyard to your hand.
(Melds with Graf Rats.)

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost.)
When you cast this spell, you may destroy target artifact or enchantment.

Haste
Delirium — When Mournwillow enters the battlefield, if there are four or more card types among cards in your graveyard, creatures with power 2 or less can't block this turn.

Destroy target creature.

Flash (You may cast this spell any time you could cast an instant.)
Flying
Whenever Nebelgast Herald or another Spirit enters the battlefield under your control, tap target creature an opponent controls.

If a spell or ability an opponent controls causes you to discard a card, you may reveal that card and put it on top of your library instead of putting it anywhere else.
: Add .

Reach
Discard a card: Noose Constrictor gets +1/+1 until end of turn.