Whenever you sacrifice Koraja, exile it. Until the end of your next turn, you may cast it from exile.
When Koraja enters, if it wasn't cast from your hand, you may discard your hand. If you do, draw two cards.

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.

Ward {1}
Whenever Kynaios, Blade-Bound or attacks, reveal the top five cards of your library. You may put an Aura card or a card with a Blessing from among them into your hand. Put the rest on the bottom of your library in any order.

Vigilance, trample
As long as there are five or more instant and/or sorcery cards in your graveyard, Lagoroth, Century's Apex has haste and ward {5}.
As long as there are ten or more instant and/or sorcery cards in your graveyard, Lagoroth gets +10/+10.

Vigilance, ward {1}
Whenever Lavis attacks, sacrifice any number of artifacts and/or enchantments. Create that many colorless Forest Plains land tokens named Root Node.

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.

Kraken, Leviathan, Octopus, and Serpent spells you cast cost {X} less to cast, where X is your devotion to blue.

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.

At the beginning of combat on your turn, up to one target creature you control has base power and toughness X/X until end of turn, where X is the number of enchantments you control.
When Lykaretos dies, bless target land.

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.

When Mellan, Defense Attorney enters, make a pledge.
{T}: Choose a color from among other permanents you control. Another target creature you control gains hexproof from that color until end of turn. It can't be blocked by creatures of that color this turn.

When Menelaia enters, put a +1/+1 counter on up to two target creatures.
{1}, Remove a +1/+1 counter from another creature you control: That creature gain indestructible until end of turn. Tap it.

Revered
Whenever this creature deals combat damage to a player, create a 1/1 green Spirit creature token.

Mev can't be blocked by creatures with greater power.
Whenever Mev attacks, draw a card.
Whenever Mev deals damage to a player, that player draws a card.

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.

Ward—Sacrifice a permanent.
Whenever you cast a spell that targets Molpadia, the Last Acephali, exile the top card of your library. You may play it this turn.

Trample
Whenever Mondo attacks, create a 1/1 colorless Soldier creature token that's tapped and attacking, then Mondo gets +X/+0 until end of turn, where X is the number of attacking creatures.

Exalted
{2}{W}: Target attacking creature gains double strike until end of turn.
{2}{B}: Target attacking creature gains indestructible until end of turn.

Flash
When Narzi, Hero of the Mokar enters, up to one other target creature gets +1/+1 and gains indestructible until end of turn. If she wandered, other creatures you control get +1/+1 and gain indestructible until end of turn instead.
Wander {4}{W}{W}

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.

When Nocturne, Monstrous Krasis enters and at the beginning of your upkeep, put X +1/+1 counters on Nocturne, where X is the number of different kinds of counters on permanents you control.

Nykthos, Architect of Gods has indestructible as long as you control at least three Shrines.
Whenever Nykthos attacks, you may pay {W}{U}{B}{R}{G}. If you do, search your library for a Shrine or legendary land card, put it onto the battlefield, then shuffle.

Whenever you cast an instant or sorcery spell from your hand, cache it instead of putting it into your graveyard as it resolves.