Tetzimoc, Primal Death

Deathtouch
, Reveal Tetzimoc, Primal Death from your hand: Put a prey counter on target creature. Activate this ability only during your turn.
When Tetzimoc enters the battlefield, destroy each creature your opponents control with a prey counter on it.

Vona’s Hunger

Ascend (If you control ten or more permanents, you get the city’s blessing for the rest of the game.)
Each opponent sacrifices a creature. If you have the city’s blessing, instead each opponent sacrifices half the creatures they control, rounded up.

Awakened Amalgam

Awakened Amalgam’s power and toughness are each equal to the number of differently named lands you control.

Gishath, Sun’s Avatar

Vigilance, trample, haste
Whenever Gishath, Sun’s Avatar deals combat damage to a player, reveal that many cards from the top of your library. Put any number of Dinosaur creature cards from among them onto the battlefield and the rest on the bottom of your library in a random order.

Raiders’ Wake

Whenever an opponent discards a card, that player loses 2 life.
Raid — At the beginning of your end step, if you attacked this turn, target opponent discards a card.

Gishath, Sun’s Avatar

Vigilance, trample, haste
Whenever Gishath, Sun’s Avatar deals combat damage to a player, reveal that many cards from the top of your library. Put any number of Dinosaur creature cards from among them onto the battlefield and the rest on the bottom of your library in a random order.

Huatli’s Spurring

Target creature gets +2/+0 until end of turn. If you control a Huatli planeswalker, that creature gets +4/+0 until end of turn instead.

Orator of Ojutai

As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
Defender, flying
When Orator of Ojutai enters the battlefield, if you revealed a Dragon card or controlled a Dragon as you cast this spell, draw a card.

Dauntless Aven

Flying
Whenever Dauntless Aven attacks, untap target creature you control.

Behold My Grandeur

When you set this scheme in motion, add .
When you set this scheme in motion, if you control six or more lands, you may search your library for a card with converted mana cost 6 or greater, reveal it, put it into your hand, then shuffle your library.

Damnation

Destroy all creatures. They can’t be regenerated.

Metallic Mimic

As Metallic Mimic enters the battlefield, choose a creature type.
Metallic Mimic is the chosen type in addition to its other types.
Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.

Negate

Counter target noncreature spell.

Sweatworks Brawler

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you’re done activating mana abilities pays for .)
Menace

Metallic Mimic

As Metallic Mimic enters the battlefield, choose a creature type.
Metallic Mimic is the chosen type in addition to its other types.
Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.

Maverick Thopterist

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you’re done activating mana abilities pays for .)
When Maverick Thopterist enters the battlefield, create two 1/1 colorless Thopter artifact creature tokens with flying.

Expropriate

Council’s dilemma — Starting with you, each player votes for time or money. For each time vote, take an extra turn after this one. For each money vote, choose a permanent owned by the voter and gain control of it. Exile Expropriate.

Ishai, Ojutai Dragonspeaker

Flying
Whenever an opponent casts a spell, put a +1/+1 counter on Ishai, Ojutai Dragonspeaker.
Partner (You can have two commanders if both have partner.)