Each creature you control enters with an additional +1/+1 counter on it if you cast it.
Whenever an Elemental creature you control enters, you gain life equal to its power.

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.

Return up to three target cards from your graveyard to your hand. Exile Soulless Archive.

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

Prevent all damage that would be dealt to Soundproof Transport by creatures blocking it.

At the beginning of your end step, if you control three or more untapped lands, up to one target nonland permanent doesn't untap during its controller's next untap step.

Flying
Nonland permanents you control have phasing.
Whenever Spacetime Seraph phases out, until your next turn, your life total can't change and you have protection from everything.

Counter target activated or triggered ability from a nonland source. If a creature's ability is countered this way, you may pay {1}{C}. If you do, exile that creature.

Menace
When Speaker of Ash enters, you may sacrifice a nonland permanent or discard a card. If you do, each opponent sacrifices a nonland permanent with mana value equal to the sacrificed permanent or discarded card's mana value.

{T}: Add one mana of any color.
At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, untap Speaker of Endless Winter and put a +1/+1 counter on it.

Whenever a Ruin you control becomes spellcharged, put a +1/+1 counter on Speaker of the Forebears.
Sacrifice Speaker of the Forebears: Add an amount of {R} equal to the number of +1/+1 counters on it.

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.

Target player sacrifices a creature with the greatest power among creatures they control. Create X 1/1 red and green Elemental creature tokens, where X is the sacrificed creature's power.

Whenever another creature you control enters, you may pay {X}{X}. If you do, put X +1/+1 counters on that creature.
{T}: Add one mana of any color.

Flying
Sacrifice Spellbane Sentinel: Counter target noncreature spell unless its controller pays {1}.

Enchant creature
Whenever enchanted creature becomes the target of a spell or ability, put a +1/+1 counter on it and that creature deals 1 damage to each opponent. This ability triggers no more than twice each turn.

Whenever Spikemane Lion dies, you may bless target creature.

Spiraling Canyon enters tapped unless you control a basic Mountain or basic Plains.

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.

When this creature transforms into Splintered Soul, create X 3/1 colorless Cyborg Soldier artifact creature tokens.
Whenever Splintered Soul or another Cyborg you control dies, you gain 1 life.

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.