Enraged Giant

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Trample, haste

Freejam Regent

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Flying
{1}{R}: This creature gets +2/+0 until end of turn.

Frontline Rebel

This creature attacks each combat if able.

Gremlin Infestation

Gremlin

Enchant artifact
At the beginning of your end step, this Aura deals 2 damage to enchanted artifact's controller.
When enchanted artifact is put into a graveyard, create a 2/2 red Gremlin creature token.

Hungry Flames

Hungry Flames deals 3 damage to target creature and 2 damage to target player or planeswalker.

Indomitable Creativity

Destroy X target artifacts and/or creatures. For each permanent destroyed this way, its controller reveals cards from the top of their library until an artifact or creature card is revealed and exiles that card. Those players put the exiled cards onto the battlefield, then shuffle.

Invigorated Rampage

Choose one —
• Target creature gets +4/+0 and gains trample until end of turn.
• Two target creatures each get +2/+0 and gain trample until end of turn.

Kari Zev, Skyship Raider

Ragavan

First strike, menace
Whenever Kari Zev attacks, create Ragavan, a legendary 2/1 red Monkey creature token. Ragavan enters tapped and attacking. Exile that token at end of combat.

Kari Zev's Expertise

Gain control of target creature or Vehicle until end of turn. Untap it. It gains haste until end of turn.
You may cast a spell with mana value 2 or less from your hand without paying its mana cost.

Lathnu Sailback

Call for Unity

Revolt — At the beginning of your end step, if a permanent left the battlefield under your control this turn, put a unity counter on this enchantment.
Creatures you control get +1/+1 for each unity counter on this enchantment.

Lightning Runner

Energy Reserve

Double strike, haste
Whenever this creature attacks, you get {E}{E} (two energy counters), then you may pay eight {E}. If you pay, untap all creatures you control, and after this phase, there is an additional combat phase.

Pia's Revolution

Whenever a nontoken artifact is put into your graveyard from the battlefield, return that card to your hand unless target opponent has this enchantment deal 3 damage to them.

Precise Strike

Target creature gets +1/+0 and gains first strike until end of turn.

Quicksmith Rebel

When this creature enters, target artifact you control gains "{T}: This artifact deals 2 damage to any target" for as long as you control this creature.

Ravenous Intruder

Sacrifice an artifact: This creature gets +2/+2 until end of turn.

Aether Revolt