When Snowscryer enters, surveil 3.

Haste
Amity — Whenever you attack with Solid Smog and exactly one other creature, you may pay {R}. If you do, transform Solid Smog.

Create two 1/1 colorless Servo artifact creature tokens. Scry 1.

Flying
Drop — When Soul Melter enters, if you didn't cast any creature spells during your last turn, each opponent loses 2 life and you gain 2 life.

When Soul-Guide Lantern enters, exile target card from a graveyard.
{T}, Sacrifice Soul-Guide Lantern: Exile each opponent's graveyard.
{1}, {T}, Sacrifice Soul-Guide Lantern: Draw a card.

Haste
At the beginning of your end step, if a creature died this turn, put a +1/+1 counter on Soundforged Tyrant.

Prowess
When Speaker of the Lightning enters, return target instant or sorcery card from your graveyard to your hand.

Whenever Spear of the Sun-Crowned attacks, if you control two or more enchanted creatures, it gains lifelink until end of turn.

Whenever you amp it up, Spirit of the Crowd gets +1/+1 and gains trample until end of turn.

Flash
Enchant creature
Enchanted creature gets +2/+2.

Splintering Blast deals 4 damage to target creature. If you controlled a creature with menace as you cast this spell, instead Splintering Blast deals 4 damage divided as you choose among up to two target creatures.

Deathtouch

Menace
Amity — Whenever you attack with Splitting Smog and exactly one other creature, you may pay {1}{R}. If you do, attacking creatures you control get +2/+0 until end of turn.

Flying
Springsoarer enters with a +1/+1 counter on it if a creature you controlled dealt combat damage to a player this turn.
Wander {2}{U}

{2}, Sacrifice Spry Illuminator: Destroy target enchantment or noncreature artifact.

Flash

Flash
Whenever you cast a spell during an opponent's turn, tap up to one target artifact or creature.

Create two 1/1 green Elf creature tokens. Then if there are six or more different creature types among creatures you control, put a +1/+1 counter on each of those tokens.
Draw a card.

Menace
Surface {3}{B}{B}

Enchant creature
When Stasis Chamber enters, if you control a creature with vigilance, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Put a haste counter on up to one target creature.
Draw a card.

Enchant creature
Enchanted creature gets +3/+3.
{4}{G}, Exile Steady Bass from your graveyard: Put three +1/+1 counters on target creature. Activate only as a sorcery.

Steam Colony enters tapped.
{T}: Add {U} or {R}.
{1}, Discard Steam Colony: Scry 2.

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

Whenever Steelhorn Crusher or another artifact you control enters, artifact creatures you control gain menace until end of turn.