Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Shrine to Those Forgotten enters tapped.
{1}, {T}: Add X mana is any combination of colors, where X is the number of Shrines you control.

Put two +1/+1 counters on target creature you control. It fights up to one target creature an opponent controls. You gain 4 life.

This land enters tapped.
Level up {G}{G}{G}
[level 1-2] Ward {2}
This land is also a creature.
[level 3+] Ward {2}
This land is also a creature.

Calmed Battleground enters tapped unless you control a Plains.
{T}: Add {B} or {R}.

When this creature enters, you may pay X life. When you do, return X target cards you discarded this turn from your graveyard to your hand.
Whenever you discard a card, each opponent loses 1 life.

Put a +1/+1 counter on target creature. It gets +2/+0 and gains trample until end of turn.

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.

Target creature gets -2/-2 until end of turn. Its controller mills two cards.

Whenever you cast a noncreature spell, this creature gets +2/+1 until end of turn.

Level up {1}{G}
[level 1-2] Whenever you cast a creature spell with power 3 or greater, draw a card.
[level 3+] Whenever you cast a creature spell with power 3 or greater, copy it.

Whenever a Forest you control enters, put a +1/+1 counter on Seeker of New Horizons. Then you may remove four +1/+1 counters from among creatures you control. If you do, bless that land.

When Overbearing Researcher enters, put a +1/+1 counter on target creature.
Each creature you control has ward {X}, where X is the number of counters on that creature.

Whenever Devourer of Fortunes enters or attacks, return up to one target instant or sorcery card in a graveyard or creature on the battlefield to its owner's hand. You may cast a copy of it, and may spend mana of any type to cast it.

Whenever Defthand Infiltrator deals combat damage to a player, put a +1/+1 counter on it if it doesn't have one on it.
Defthand Infiltrator can't be blocked as long as it has a counter on it.

{T}: Lavaborn Slug deals 1 damage to target player.
Landfall — Whenever a land you control enters, untap Lavaborn Slug.

At the beginning of combat each turn, untap this creature.

Trailblazer Anarch has first strike as long as it's your turn.

At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, Peaktop Predator deals 2 damage to target player or planeswalker.

Approval — When Flock Favorites enters, exile the top X cards of your library, where X is the number of colors among permanents you control. Until the end of your next turn, you may play those cards.

Whenever you cast a noncreature spell, create a 1/1 blue Bird creature token with flying.
Flow — {10}{W}{U}: Draw cards equal to half the number of cards in your library, rounded up.

Landfall — Whenever a land you control enters, you may attach Hard Stone to target creature.
Equipped creature gets +3/+3.
Equip {3}

When this creature enters, mill four cards. You may return a noncreature, nonland card milled this way to your hand.
{1}{W}: This creature gets +1/+0 and gains first strike until end of turn.

Defender
Approval — Political Prisoner can attack as though it didn't have defender as long as the number of colors among permanents you control is greater than the number of colors among permanents defending player controls.

{R}, {T}: Copy target activated ability you control. You may choose new targets for the copy.