When Sengir Autocrat enters the battlefield, create three 0/1 black Serf creature tokens.
When Sengir Autocrat leaves the battlefield, exile all Serf tokens.

Search your library for up to two creature cards with different names, reveal them, put them into your hand, then shuffle your library.

When Siege-Gang Commander enters the battlefield, create three 1/1 red Goblin creature tokens.
, Sacrifice a Goblin: Siege-Gang Commander deals 2 damage to any target.

: Skittering Heartstopper gains deathtouch until end of turn.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)
Snubhorn Sentry gets +3/+0 as long as you have the city's blessing.

Solitary Camel has lifelink as long as you control a Desert or there is a Desert card in your graveyard. (Damage dealt by this creature also causes you to gain that much life.)

As Sorcerous Spyglass enters the battlefield, look at an opponent's hand, then choose any card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

: Add one mana of any color.
, : Tap target creature.

Equipped creature gets +1/+1 and has all names of nonlegendary creature cards in addition to its name.
Equip

Trample
At the beginning of each combat, if you control a creature with power 4 or greater, Stampede Rider gets +1/+1 until end of turn.

Enchant creature
When Stratus Walk enters the battlefield, draw a card.
Enchanted creature has flying. (It can't be blocked except by creatures with flying or reach.)
Enchanted creature can block only creatures with flying.

Enrage — Whenever Sun-Crowned Hunters is dealt damage, it deals 3 damage to target opponent or planeswalker.

Vigilance
Whenever Swathcutter Giant attacks, it deals 1 damage to each creature defending player controls.

First strike, trample, haste
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

During your turn, spells your opponents cast cost more to cast and abilities your opponents activate cost more to activate unless they're mana abilities.
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)

When Together Forever enters the battlefield, support 2. (Put a +1/+1 counter on each of up to two target creatures.)
: Choose target creature with a counter on it. When that creature dies this turn, return that card to its owner's hand.

Put target nonland permanent on top of its owner's library.

Transmogrifying Wand enters the battlefield with three charge counters on it.
, , Remove a charge counter from Transmogrifying Wand: Destroy target creature. Its controller creates a 2/4 white Ox creature token. Activate this ability only any time you could cast a sorcery.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)
Whenever this creature mutates, create a 3/3 green Beast creature token.

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Each creature you control with a +1/+1 counter on it has trample.