Wrecking Beast

Riot (This creature enters with your choice of a +1/+1 counter or haste.)
Trample

District Guide

When District Guide enters, you may search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle.

End-Raze Forerunners

Vigilance, trample, haste
When End-Raze Forerunners enters, other creatures you control get +2/+2 and gain vigilance and trample until end of turn.

Burn Bright

Creatures you control get +2/+0 until end of turn.

Domri's Nodorog

Trample
When Domri's Nodorog enters, you may search your library and/or graveyard for a card named Domri, City Smasher, reveal it, and put it into your hand. If you search your library this way, shuffle.

Aggressive Mammoth

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Other creatures you control have trample.

Sunder Shaman

Sunder Shaman can't be blocked by more than one creature.
Whenever Sunder Shaman deals combat damage to a player, destroy target artifact or enchantment that player controls.

Mountain

Glass of the Guildpact

Multicolored creatures you control get +1/+1.

Gruul Guildgate

This land enters tapped.
{T}: Add {R} or {G}.

Zhur-Taa Goblin

Riot (This creature enters with your choice of a +1/+1 counter or haste.)

Frenzied Arynx

Riot (This creature enters with your choice of a +1/+1 counter or haste.)
Trample
{4}{R}{G}: Frenzied Arynx gets +3/+0 until end of turn.

Mirror March

Whenever a nontoken creature you control enters, flip a coin until you lose a flip. For each flip you won, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step.

Kraul Harpooner

Reach
Undergrowth — When Kraul Harpooner enters, choose up to one target creature you don't control with flying. Kraul Harpooner gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have Kraul Harpooner fight that creature.

Bolrac-Clan Crusher

{T}, Remove a +1/+1 counter from a creature you control: Bolrac-Clan Crusher deals 2 damage to any target.

Game Trail

As Game Trail enters, you may reveal a Mountain or Forest card from your hand. If you don't, Game Trail enters tapped.
{T}: Add {R} or {G}.

Clamor Shaman

Riot (This creature enters with your choice of a +1/+1 counter or haste.)
Whenever Clamor Shaman attacks, target creature an opponent controls can't block this turn.

Stony Strength

Put a +1/+1 counter on target creature you control. Untap that creature.

Lava Coil

Lava Coil deals 4 damage to target creature. If that creature would die this turn, exile it instead.

Shock

Crystal Ball

{1}, {T}: Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Charging War Boar

Haste (This creature can attack and {T} as soon as it comes under your control.)
As long as you control a Domri planeswalker, Charging War Boar gets +1/+1 and has trample. (It can deal excess damage to the player or planeswalker it's attacking.)

Domri, City Smasher

+2: Creatures you control get +1/+1 and gain haste until end of turn.
−3: Domri, City Smasher deals 3 damage to any target.
−8: Put three +1/+1 counters on each creature you control. Those creatures gain trample until end of turn.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Skittering Surveyor

When Skittering Surveyor enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.