Arrester’s Admonition

Return target creature to its owner’s hand.
Addendum — If you cast this spell during your main phase, draw a card.

Clear the Stage

Target creature gets -3/-3 until end of turn. If you control a creature with power 4 or greater, you may return up to one target creature card from your graveyard to your hand.

Senate Griffin

Flying
When Senate Griffin enters the battlefield, scry 1.

Vexing Devil

When Vexing Devil enters the battlefield, any opponent may have it deal 4 damage to them. If a player does, sacrifice Vexing Devil.

Ulamog’s Crusher

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)
Ulamog’s Crusher attacks each combat if able.

Varchild, Betrayer of Kjeldor

Whenever Varchild, Betrayer of Kjeldor deals combat damage to a player, that player creates that many 1/1 red Survivor creature tokens.
Survivors your opponents control can’t block, and they can’t attack you or a planeswalker you control.
When Varchild leaves the battlefield, gain control of all Survivors.

Boros Challenger

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
: Boros Challenger gets +1/+1 until end of turn.

Take Heart

Target creature gets +2/+2 until end of turn. You gain 1 life for each attacking creature you control.

Boros Challenger

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
: Boros Challenger gets +1/+1 until end of turn.

Dimir Informant

When Dimir Informant enters the battlefield, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Zendikar Incarnate

Zendikar Incarnate’s power is equal to the number of lands you control.

Varchild, Betrayer of Kjeldor

Whenever Varchild, Betrayer of Kjeldor deals combat damage to a player, that player creates that many 1/1 red Survivor creature tokens.
Survivors your opponents control can’t block, and they can’t attack you or a planeswalker you control.
When Varchild leaves the battlefield, gain control of all Survivors.

Borderland Explorer

When Borderland Explorer enters the battlefield, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle their library.

Lightning Mare

This spell can’t be countered.
Lightning Mare can’t be blocked by blue creatures.
: Lightning Mare gets +1/+0 until end of turn.

Lena, Selfless Champion

When Lena, Selfless Champion enters the battlefield, create a 1/1 white Soldier creature token for each nontoken creature you control.
Sacrifice Lena: Creatures you control with power less than Lena’s power gain indestructible until end of turn.

Shield Mare

Shield Mare can’t be blocked by red creatures.
When Shield Mare enters the battlefield or becomes the target of a spell or ability an opponent controls, you gain 3 life.

Lena, Selfless Champion

When Lena, Selfless Champion enters the battlefield, create a 1/1 white Soldier creature token for each nontoken creature you control.
Sacrifice Lena: Creatures you control with power less than Lena’s power gain indestructible until end of turn.

Aether Tunnel

Enchant creature
Enchanted creature gets +1/+0 and can’t be blocked.

Bramble Sovereign

Whenever another nontoken creature enters the battlefield, you may pay . If you do, that creature’s controller creates a token that’s a copy of that creature.

Generous Patron

When Generous Patron enters the battlefield, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)
Whenever you put one or more counters on a creature you don’t control, draw a card.

Firefist Adept

When Firefist Adept enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of Wizards you control.