
Afterburner Expert | Creature | Goblin Artificer | Exhaust — {2}{G}{G}: Put two +1/+1 counters on this creature. (Activate each exhaust ability only once.)
Whenever you activate an exhaust ability, return this card from your graveyard to the battlefield. | April Prime

Agonasaur Rex | Creature | Dinosaur | Trample
Cycling {2}{G} ({2}{G}, Discard this card: Draw a card.)
When you cycle this card, put two +1/+1 counters on up to one target creature or Vehicle. It gains trample and indestructible until end of turn. | Lucas Graciano

District Mascot | Creature | Dog Mount | This creature enters with a +1/+1 counter on it.
{1}{G}, Remove two +1/+1 counters from this creature: Destroy target artifact.
Whenever this creature attacks while saddled, put a +1/+1 counter on it.
Saddle 1 | Liiga Smilshkalne

Oviya, Automech Artisan | Legendary Creature | Human Artificer | Each creature that's attacking one of your opponents has trample.
{G}, {T}: You may put a creature or Vehicle card from your hand onto the battlefield. If you put an artifact onto the battlefield this way, put two +1/+1 counters on it. | Julia Metzger

Regal Imperiosaur | Creature | Dinosaur | Other Dinosaurs you control get +1/+1. | Stephanie Cheung

Webstrike Elite | Creature | Insect Archer | Reach
Cycling {X}{G}{G} ({X}{G}{G}, Discard this card: Draw a card.)
When you cycle this card, destroy up to one target artifact or enchantment with mana value X. | Andrew Mar

Caradora, Heart of Alacria | Legendary Creature | Human Knight | When Caradora enters, you may search your library for a Mount or Vehicle card, reveal it, put it into your hand, then shuffle.
If one or more +1/+1 counters would be put on a creature or Vehicle you control, that many plus one +1/+1 counters are put on it instead. | Mirko Failoni

Sita Varma, Masked Racer | Legendary Creature | Human Rogue | Exhaust — {X}{G}{G}{U}: Put X +1/+1 counters on Sita Varma. Then you may have the base power and toughness of each other creature you control become equal to Sita Varma's power until end of turn. (Activate each exhaust ability only once.) | Kai Carpenter

Aatchik, Emerald Radian | Legendary Creature | Insect Druid | When Aatchik enters, create a 1/1 green Insect creature token for each artifact and/or creature card in your graveyard.
Whenever another Insect you control dies, put a +1/+1 counter on Aatchik. Each opponent loses 1 life. | Loïc Canavaggia

Redshift, Rocketeer Chief | Legendary Creature | Goblin Pilot | Vigilance
{T}: Add X mana of any one color, where X is Redshift's power. Spend this mana only to activate abilities.
Exhaust — {10}{R}{G}: Put any number of permanent cards from your hand onto the battlefield. (Activate each exhaust ability only once.) | Wayne Reynolds

Samut, the Driving Force | Legendary Creature | Human Warrior Cleric | First strike, vigilance, haste
Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.)
Other creatures you control get +X/+0, where X is your speed.
Noncreature spells you cast cost {X} less to cast, where X is your speed. | Chris Rallis