Target creature you control gets +1/+0 and gains haste until end of turn.
Draw a card.

Counter target spell with mana value X. If that spell is targeting you or a creature you control, you may choose new targets for it instead.

Draw a card. If you've amped it up this turn, creatures your opponents control get -1/-0 until end of turn.

When Rib Collector enters, if it wandered, return target creature card from your graveyard to your hand.
Wander—{1}{B}, Sacrifice another creature.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. Scry 1.

Target creature you control gains deathtouch until end of turn. When that creature dies this turn, create a 2/2 black Zombie creature token.

Target creature gets +1/+0 and gains first strike until end of turn. It gets an additional +2/+0 until end of turn for each time you've amped it up this turn.

Whenever Rooftop Slink deals combat damage to a player, you may have each player discard a card.
Cybersoul {2}{B}

Enchant creature
Enchanted creature gets -1/-1.
Sacrifice an artifact: Destroy enchanted creature.

Whenever a basic land you control enters, put a +1/+1 counter on Seeker of New Horizons. If you control seven or more lands, bless that land.

At the beginning of combat on your turn, you gain 1 life. If you control three or more Shrines, instead you gain 3 life.

{2}{B}: Return target creature card with mana value X or less from your graveyard to the battlefield, where X is the number of Shrines you control. Activate only once each turn and only during your turn.

At the beginning of combat on your turn, each opponent mills two cards. If you control three or more Shrines, you may exile one of those cards. You may cast that card as long as it remains exiled, and mana of any type can be spent to cast that spell.

Flash
Flying
When Sleeper Strix enters, tap up to one target creature.
Whenever you surveil, you may return Sleeper Strix to its owner's hand.

When Slumbering Grove enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Spellcharge 8

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.

When Sparks of a Revolution enters, create a 1/1 colorless Soldier creature token. It gains haste until end of turn.
Three or more sources you controlled dealt damage this turn.
A source you controlled dealt 3 or more damage this turn.

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.

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.

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

Whenever you amp it up, target creature gets +1/+1 until end of turn. If this is the second time this ability has resolved this turn, put a +1/+1 counter on that creature instead.

Deathtouch

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.

Counter target spell unless its controller pays {X}. If they do, create an X/X blue and black Fish creature token.