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.

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.

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.

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

Landfall — Whenever a land you control enters, put a +1/+1 counter on Spore Collector. It gains your choice of vigilance, first strike, or lifelink 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}

Flying
When Squallrunner Duo enters, create a 1/1 white Human creature token.
Nontoken creatures you control that have attacked this turn have wander {2}.

When Stehlian Reverend enters, put a +1/+1 counter on target creature.
Cybersoul {4}{W}

Sterling enters under the control of an opponent of your choice.
At the beginning of your upkeep, surveil 1.
Play with the top card of your library revealed.
Your opponents may play lands and cast spells from the top of your library during their turns, and they may spend mana of any type to cast spells this way.

Flying
When Stratus Fledgling enters, it acclimates.
Weather spells you cast cost {1} less to cast.

Flying
Favored
Whenever your Champion attacks, untap it.

{T}: Add one mana of any color.
Amity — Whenever you attack with Sunsoaker and exactly one other creature, put a +1/+1 counter on Sunsoaker and add one mana of any color. Until end of turn, you don't lose that mana as steps and phases end.

When Survivors of the New World enters, if it isn't a token, create two tokens that are copies of it.
When Survivors of the New World dies, reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.

When Taiga Bonder enters, put a +1/+1 counter on target creature.
Wander {3}{W}{W}

When Tenki enters, it acclimates.
Weather you control are all colors.
{T}, Sacrifice a Weather: Tenki acclimates. The next Weather spell you cast this turn has flash and costs {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay.

As long as you've cast an instant spell this turn, Teqien Overseer gets +1/+1 and has hexproof.
As long as you've cast a sorcery spell this turn, Teqien Overseer gets +1/+1 and has flying.

Flying, vigilance
When The Army of Trax enters, create a number of 0/0 white Army creature tokens equal to your devotion to white. Then put that many +1/+1 counters on each Army you control.

When Tireless Aspirants enters, you may draw a card. If you do, discard a card.
Wander {1}{U}

Flying
{1}{VP}{VP}, {T}: Tap target creature.

Whenever a creature you control leaves the battlefield, put a +1/+1 counter on Traxian Hoplite.

{T}: Add one mana of any color.

Double strike

Whenever another creature dies, you may integrate it.
Whenever a creature card is integrated onto Unmolded One, you may have it become a copy of that card until end of turn, except it has Unmolded One's abilities.

Approval — {3}, {T}, Discard a card: Draw a card. This ability costs {X} less to activate, where X is the number of colors among permanents you control.