msem-instigator

Whenever two or more creatures an opponent controls block, adjudicate. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)
Enchanted creatures you control have menace.

Until end of turn, creatures you control get +1/+1 and creatures your opponents control get -1/-1.

Zealous Rabble gets +1/+1 for each creature token you control.
At the beginning of your end step, if you're horrific, create a token that's a copy of Zealous Rabble, except it doesn't have this ability. (You're horrific as long as you've sacrificed a permanent or discarded a card this turn.)

Whenever Zealous Scaleblight becomes tapped, it deals 1 damage to any target.

[+1]: Each player discards a card at random, then draws a card.
[–2]: Until end of turn, gain control of target nonland permanent and it gains haste. Untap it.
[–6]: You get an emblem with “Whenever a source you control deals damage to an opponent, gain control of target permanent that player controls.”

Spirited (When this creature enters the battlefield, you may activate one of its activated abilities without paying its cost.)
{G}: Zen Ascendant becomes a copy of a creature token you control until end of turn. (It's not a token.)

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
{T}: Add {G}.

Flying
When Zenith of Greed enters the battlefield, search your library for up to two cards named Treasure Hoard and put them onto the battlefield, then shuffle.

Flying
When Zephyr Gliders enters the battlefield, up to two target creatures you control gain flying until end of turn.

Flash
Defender, flying

First strike (This creature deals combat damage before creatures without first strike.)
When Zephyr Rider enters the battlefield, you may have another target creature you control gain first strike until end of turn.

Equipped creature gets +1/+1 and has flying.
Equip {2}

Archive 5 (As this enters the battlefield, shuffle the top five cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Once each turn, you may cast the top card of the archived library without paying its mana cost.

First strike, menace
When Zhargetan Reclaimer enters the battlefield, put any number of cards your opponents own from exile into their owners' graveyards. If three or more cards were put into graveyards this way, create two 1/1 Scout creature tokens that are all colors.

{T}, Sacrifice an artifact or enchantment: Draw a card.

Flash
When Zhedina Coastguard enters the battlefield, you may have any number of creatures you control have base power and toughness 1/3, 2/2, or 3/1 until end of turn.

{1}, Sacrifice Zhedina Confiscator: Destroy target artifact or enchantment.

When Zhedina Envoys leaves the battlefield, create two 1/1 Scout creature tokens that are all colors.

When Zhedina Exchange enters the battlefield, choose a basic land type.
Basic lands you control of the chosen type have “{T}: Add one mana of any color.”
{T}: Add {C}.

{3}, Reveal Zhedina Outskirts from your hand: Put Zhedina Outskirts from your hand onto the battlefield tapped.
{T}: Add {C}.
{1}, {T}: Add one mana of any color.

When Zhedina Provisioner enters the battlefield, creatures you control get +1/+1 until end of turn. You gain 2 life.

Defender
Wanderlust — As long as you control four or more differently named lands, Zhedina Servitor can attack as though it didn't have defender.

When Zhedina Valiant enters the battlefield, create a white and blue Aura enchantment token named Winds of Chance attached to target creature. The token has enchant creature and “Enchanted creature gets +1/+0 and has flying and lifelink.”

Lifelink
When Zhehan, the Mediator enters the battlefield, you may put an Aura card with mana value 3 or less from your hand onto the battlefield attached to a creature it could enchant.