Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)
Menace

Whenever an artifact you control enters, this creature gains flying until end of turn.

Return target nonland permanent to its owner's hand.
Draw a card.

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

Whenever a permanent you control is put into a graveyard, you get (an energy counter).
, Pay six : Look at the top six cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

Vigilance
When this creature enters, you get (two energy counters).
Whenever this creature attacks, you may pay . If you do, create a 1/1 colorless Servo artifact creature token.

When this creature enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

+1: Exile the top card of your library. You may cast that card. If you don't, Chandra deals 2 damage to each opponent.
+1: Add .
−3: Chandra deals 4 damage to target creature.
−7: You get an emblem with "Whenever you cast a spell, this emblem deals 5 damage to any target."

Fateful Showdown deals damage to any target equal to the number of cards in your hand. Discard all the cards in your hand, then draw that many cards.

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.)

Return any number of target nonland, nontoken permanents you control to their owners' hands. Draw a card for each card returned to your hand this way.

Furious Reprisal deals 2 damage to each of two targets.

Flying
Vehicles you control have flying.

Flying
Whenever this creature or another creature you control enters, you get (an energy counter).
Whenever this creature attacks, you may pay . If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls.

Deathtouch
When Gonti enters, 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 cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.

If an artifact or creature entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Trample
Whenever this Vehicle attacks, put a +1/+1 counter on it.
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

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

Double strike (This creature deals both first-strike and regular combat damage.)
When this creature enters, you get (two energy counters).
Whenever this creature attacks, you may pay . If you do, put a +1/+1 counter on it.

When this Vehicle enters, draw a card.
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.)

Flying
Revolt — This creature enters with a +1/+1 counter on it if a permanent left the battlefield under your control this turn.

When this creature enters, you get an amount of (energy counters) equal to the greatest power among creatures you control.
Pay : Target creature blocks this turn if able.

Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.)

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

Flying
When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Chandra's Revolution deals 4 damage to target creature. Tap target land. That land doesn't untap during its controller's next untap step.

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn.
Pay 50 life: This artifact deals 50 damage to any target.

Trample, haste
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

When this creature enters, you get (four energy counters).
Pay : This creature gets +2/-2 until end of turn.

Whenever this Vehicle attacks, it deals 1 damage to any target.
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.)

Each opponent sacrifices a creature or planeswalker of their choice, then discards a card. You return a creature or planeswalker card from your graveyard to your hand, then draw a card.
When you cast a Bolas planeswalker spell, exile this card from your graveyard. That planeswalker enters with an additional loyalty counter on it.

Trample
When this creature enters, you gain 5 life.

Flying
When this creature enters, you gain 2 life and draw two cards.

When this creature enters, put a +1/+1 counter on each other creature you control.

Vigilance
When this creature enters, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.

Flying
Revolt — When this creature enters, if a permanent left the battlefield under your control this turn, you gain 5 life.