msem-instigator

{2}{R}, Sacrifice Lavaspark Igniter: It deals 2 damage to target creature.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

At the beginning of combat on your turn, target creature gets +1/+1 and gains haste until end of turn.

Ward—Pay 3 life.
Whenever you cast an instant or sorcery spell, recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

When Living Hoard enters, create a Treasure token.
{R}, Sacrifice an artifact: Living Hoard gets +2/+0 until end of turn.

Whenever you cast a spell that's white, blue, black, or green, create a 1/1 white Soldier creature token.

Menace (This creature can't be blocked except by two or more creatures.)
Whenever Maddened Elk attacks, it gets +1/+1 until end of turn for each other attacking creature you control.

Haste (This creature can attack and {T} as soon as it comes under your control.)
Double strike (This creature deals both first-strike and regular combat damage.)

Whenever an Actor you control becomes untapped, you may discard a card. If you do, draw a card.

Armed — Merciless Brute gets +2/+2 as long as it's equipped.

Haste
Whenever Mukal Charger attacks during your first combat phase each turn, untap all Constructs you control. After this phase, there's an additional main phase followed by an additional combat phase.
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)

Haste
Whenever Nadei deals combat damage to a player, that player sacrifices a land. You may put a land card from a graveyard onto the battlefield under your control.

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

Survivors you control have haste.

Menace
When OM-6 Walker dies, OM-6 Walker deals damage to each player equal to twice the number of nonbasic lands that player controls.

Haste (This creature can attack and {T} as soon as it comes under your control.)
Olson's Sky Brigade has flying as long as you control another attacking Pirate.

Flying
You may look at the top card of your library any time.
You may cast instant and sorcery spells from the top of your library.
Whenever you cast an instant or sorcery spell, Parabolic Predator deals 1 damage to any target.

Whenever Precursor Omniprocessor attacks, you may sacrifice an artifact or creature. If you do, put a +1/+1 counter on Precursor Omniprocessor and it gains menace until end of turn.
Crew 2 (Tap any number of creatures you control with total power 2 or greater: This Vehicle becomes an artifact creature until end of turn.)

Flying
When Pyre Apostle enters, discard your hand, then draw three cards.
Madness {3}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Trample
Whenever you attack, target creature gains first strike until end of turn. If you control a Dwarf and an Elf, that creature gains double strike until end of turn instead.

Haste
When Qilan Stormers enters, it gets +X/+0 until end of turn, where X is the number of creatures you control.

Trample

Whenever you cast a noncreature spell, Rageborn Pyromancer gets +1/+1 until end of turn.
{1}{R}: Rageborn Pyromancer gets +1/+0 and gains flying until end of turn.

Flying
When Rahstahde Persecutor enters, you may pay {2}{R}. When you do, it deals 4 damage to target creature.

First strike
When Rapacious Rattler enters, choose one or two targets you don't control. It deals 2 damage to the first and 1 damage to the second.