Aeronaut Tinkerer has flying as long as you control an artifact. (It can't be blocked except by creatures with flying or reach.)

Whenever a creature an opponent controls dies, Altac Bloodseeker gets +2/+0 and gains first strike and haste until end of turn. (It deals combat damage before creatures without first strike, and it can attack and as soon as it comes under your control.)

Flying (This creature can't be blocked except by creatures with flying or reach.)

Carrion Crow enters tapped.

Dauntless River Marshal gets +1/+1 as long as you control an Island.

: Tap target creature.

Flying

: Furnace Whelp gets +1/+0 until end of turn.

Other Goblin creatures you control attack each combat if able.

At the beginning of combat on your turn, create a 1/1 red Goblin creature token with haste.

Whenever Goblin Rabblemaster attacks, it gets +1/+0 until end of turn for each other attacking Goblin.

Flying, deathtouch

When Hornet Queen enters, create four 1/1 green Insect creature tokens with flying and deathtouch.

, , Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever another creature enters, untap Midnight Guard.

Other green creatures you control get +1/+1.

, : Another target green creature you control gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Other blue creatures you control get +1/+1.

, : Another target blue creature you control gains flying until end of turn.

Other black creatures you control get +1/+1.

, : Another target black creature you control gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

First strike (This creature deals combat damage before creatures without first strike.)

Whenever Preeminent Captain attacks, you may put a Soldier creature card from your hand onto the battlefield tapped and attacking.

Flying (This creature can't be blocked except by creatures with flying or reach.)

First strike (This creature deals combat damage before creatures without first strike.)

When Tireless Missionaries enters, you gain 3 life.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Welkin Tern can block only creatures with flying.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

: Until end of turn, Xathrid Slyblade loses hexproof and gains first strike and deathtouch. (It deals combat damage before creatures without first strike. Any amount of damage it deals to a creature is enough to destroy it.)

: Zof Shade gets +2/+2 until end of turn.