Destroy target artifact or enchantment with converted mana cost 4 or less.

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

Fretwork Colony can't block.
At the beginning of your upkeep, put a +1/+1 counter on Fretwork Colony and you lose 1 life.

Frontline Rebel attacks each combat if able.

Destroy all creatures. You gain 1 life for each creature destroyed this way.

Furious Reprisal deals 2 damage to each of two targets.

This spell costs less to cast for each artifact you control.
: Gearseeker Serpent can't be blocked this turn.

First strike
Whenever Gearshift Ace crews a Vehicle, that Vehicle gains first strike until end of turn.

Deathtouch, lifelink

Scry 2, then draw two cards. You get (two energy counters).

Flying
When Glint-Nest Crane enters the battlefield, look at the top four cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Fabricate 1 (When this creature enters the battlefield, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)

Menace
Whenever Glint-Sleeve Siphoner enters the battlefield or attacks, you get (an energy counter).
At the beginning of your upkeep, you may pay . If you do, you draw a card and you lose 1 life.

Deathtouch
When Gonti, Lord of Luxury enters the battlefield, look at the top four cards of target opponent's library, exile one of them face down, then put the rest on the bottom of that library in a random order. You may look at and cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell.

When Greenbelt Rampager enters the battlefield, pay (two energy counters). If you can't, return Greenbelt Rampager to its owner's hand and you get .

Choose target creature. You get (three energy counters), then you may pay any amount of . Harnessed Lightning deals that much damage to that creature.

Creatures with no counters on them get -2/-2 until end of turn.

Flying, vigilance
Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)
You may remove a loyalty counter from a planeswalker you control rather than pay Heart of Kiran's crew cost.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)
Flying
At the beginning of your end step, each opponent discards a card.
, Sacrifice an artifact: Target creature gets -2/-2 until end of turn.

When Herald of the Fair enters the battlefield, target creature you control gets +1/+1 until end of turn.