Whenever you cast an artifact spell, create a 0/0 colorless Robot artifact creature token with a +1/+1 counter on it.
{2}, {T}: Add {R} for each artifact you control. Spend this mana only to cast artifact spells or activate abilities of artifacts.

You may cast target instant or sorcery card from your graveyard this turn. If that card would be put into your graveyard this turn, exile it instead.
Add one mana of any color for each time you've amped it up this turn.

Menace
When Wildcaster Ogre enters, exile an instant or sorcery card from your graveyard at random. You may cast a copy of that spell without paying its mana cost.

Haste
When Wildfang Cavalier dies, create a 3/1 red Dinosaur creature token. It gains haste until end of turn. If it's your combat phase, there is an additional combat phase after this phase.

Choose one —
• Wyrmshot deals 3 damage divided as you choose among one, two, or three targets.
• Wyrmshot deals 6 damage to target creature, planeswalker, or battle.

Trample
Whenever you amp it up, double Xeon, BPM Savant's power until end of turn.

Menace
Whenever you sacrifice a permanent, exile the top card of your library. Until the end of your turn, you may play that card.

Whenever a creature you control becomes a Rebel, Zolo's Right Horn deals 2 damage to each opponent.
{3}{R}: Zolo's Right Horn dares 5.

Ward—Pay 2 life.
Whenever Zygos attacks, bless target legendary creature you control.

Put a +1/+1 counter on up to one target creature you control. Prevent all damage that would be dealt this turn except by creatures target player controls with counters on them.

Acid Hydra enters with X +1/+1 counters on it.
Drop — When Acid Hydra enters, search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. Then return that creature to your hand unless you didn't cast any creature spells during your last turn.

Aethersteel Pouncer enters with a haste counter on it.

Target creature you control gets +X/+X, gains trample, and becomes a legendary Rebel until end of turn, where X is its power. Sacrifice that creature at the beginning of the next end step.

Aggressor Model enters with a +1/+1 counter on it.

When Alluring Queenpin enters, create a 3/3 green Elemental Spirit creature token.
Elementals you control get +1/+1.

When Alrantan Visionary enters, reveal the top three cards of your library. Put a noncreature permanent card from among them into your hand and the rest into your graveyard.
{T}: Add one mana of any color.
Wander {4}{G}{G}

Vigilance, reach, trample, ward {3}
Ancient Cloudgrazer enters with X +1/+1 counters on it.

Whenever Anesthesiologist attacks, teach Anesthesiologist lifelink if you control a white permanent. Otherwise, you gain 2 life.

Put a deathtouch counter on target creature you control. Untap that creature. It gains hexproof, reach and indestructible until end of turn.

Enchant creature
Enchanted creature gets +3/+3 and has reach.

Reach
If a creature you control would deal combat damage to a permanent or player, you may have it deal damage equal to your devotion to green instead.

Distribute a trample counter, a vigilance counter, a reach counter, and a deathtouch counter among any number of creatures you control. Then draw a card for each creature you control with one or more counters on it.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. If that card doesn't share a name with any lands you control, you gain 2 life.

Trample
Whenever Aspiring Anarchist attacks, you may have its base power and toughness become equal to the power and toughness of another target attacking creature until end of turn.