Koios, Spear of Karda enters with a number of additional loyalty counters on him equal to your devotion to red.
[+1]: Exile the top three cards of your library. You may cast one of them.
[–3]: Koios deals damage to any nonplayer target equal to your devotion to red.
[–X]: Choose up to X target creatures with total mana value X or less. For each creature chosen this way, create a token that's a copy of it, except it has haste. Sacrifice those tokens at the beginning of the next end step.

Flash
This spell costs {1} less to cast for each creature that died this turn.
When Krint enters, choose any number of target creature cards in graveyards that were put there from the battlefield this turn. Return them to the battlefield under your control. You lose life equal to their total mana value.

Indestructible
As long as your devotion to green and blue is less than seven, Kruphix isn't a creature.
Whenever you tap a permanent for mana, add one mana of any type that permanent produced.

Lifelink
Level up—{1}, Pay 4 life.
[level 1-4] Lifelink
Whenever you gain life, draw a card.
[level 5+] Lifelink
Whenever you gain life, draw that many cards.

Vigilance, ward {1}
Whenever Lio or another enchantment creature you control enters, put a +1/+1 counter on that creature. You gain 1 life and draw a card.

Luraana enters tapped with twelve stun counters on it.
When Luraana enters, until your next turn, you may cast spells as though they have flash.
Untap all permanents you control during each other player's untap step.

Sacrifice a Treasure: Put a loyalty counter on Marilye, Dreaming Big.
[+1]: Draw a card, then discard a card. If you discarded a nonland card this way, create a tapped Treasure token.
[–3]: Gain control of target artifact. It becomes a Treasure artifact, loses all other types, and loses all abilities except for activated mana abilities.
[–8]: Target opponent chooses a nonland permanent they control. You gain control of the rest.

Indestructible
As long as your devotion to black and red is less than seven, Mogis isn't a creature.
Whenever you attack, each opponent loses 1 life for each creature attacking them. If a player lost 5 or more life this way, that player discards a card.

Trample, ward {4}
Equipped creature gets +4/+4 and has trample and ward {4}.
Equip {4}
Spellcharge 8

Flash
Lifelink
When Nikon, Skophos Protector enters, the next time a source of your choice would deal damage to you or a permanent you control this turn, prevent that damage. If damage is prevented this way, Nikon deals that much damage to that source's controller.

Other creatures you control get +1/+1.
Whenever Nimomae attacks, create two 1/1 blue Bird creature tokens with flying.
The first noncreature spell you cast each turn costs {X} less to cast, where X is the number of tokens you control.

Trample
When this creature enters, double the number of +1/+1 counters on another target creature you control. Then for each counter on that creature, you may put a counter of that kind on this creature.

Flying, lifelink, haste
This creature can't block.
When this creature enters, if it was cast, create a red and white Subroutine enchantment token named OVERFLOW with “Whenever this Subroutine runs, return a card named Offset Daemon from your graveyard to the battlefield.”

During your turn, you may play cards from your graveyard but not from anywhere else.
Whenever you cast an instant or sorcery spell, exile that card instead of putting it into your graveyard as it resolves.
If another permanent you control would be put into your graveyard, exile it instead.

Flash
When Omen of Slaughter enters, each opponent sacrifices a creature or planeswalker.
{2}{B}, Sacrifice Omen of Slaughter: Scry 2.

When Opulent Roughrider enters or leaves the battlefield, surveil 1, then you may reveal the top card of your library. If that card has the same name as a permanent you control or a card in your graveyard, put it into your hand.
Wander {4}{U}{U}

Indestructible
As long as your devotion to black and green is less than seven, Pharika isn't a creature.
At the beginning of your upkeep, create a 1/1 green Snake creature token. If Pharika is a creature, create a 1/1 black Snake creature token with deathtouch instead.

Whenever Phenax or another Rogue you control deals damage to a player or planeswalker, each player mills two cards.
{1}{U}{B}, Exile five other cards from your graveyard: Return Phenax from your graveyard to the battlefield transformed. Activate only as a sorcery.

Indestructible
As long as your devotion to blue and black is less than seven, Phenax isn't a creature.
At the beginning of each end step, each opponent mills X cards, where X is the number of cards put into their graveyard from anywhere this turn. You gain life equal to the number of cards milled this way.

Whenever Phlage enters or attacks, Phlage deals 2 damage divided as you choose among one or two targets. Draw a card.
{U}{U}{R}{R}: Return Phlage from your graveyard to the battlefield, then put it on the bottom of its owner's library. Activate only as a sorcery.

Whenever one or more cards leave your graveyard, put a +1/+1 counter on Phyto, Caverns Scourge, then each opponent loses life equal to half its power, rounded up. This ability triggers only once each turn.
{X}{X}{B}{G}, Exile Phyto, Caverns Scourge from your graveyard: Return X other target permanent cards from your graveyard to your hand.

At the beginning of your upkeep, if you have 50 or more life, you win the game.
At the beginning of each end step, you gain life equal to twice the amount of life you’ve lost this turn.

Whenever another Subroutine you control enters, it runs.
Whenever this Subroutine runs, create an X/X colorless Construct artifact creature token, where X is the number of Subroutines you control.

When Rano's Slopeguard enters, you may exile cards from the top of your library until you exile a nonland card with mana value 2 or less, then put the rest on the bottom in a random order. You may cast the exiled card this turn.

Trample
When this creature enters, you may sacrifice two nonland, non-Serpent permanents. If you do, create a 6/6 green Serpent creature token with trample. Repeat this process any number of times.