When Codename: Spyder enters, mill three cards.
Whenever one or more cards are put into your graveyard from your library, you may return up to one of those cards to your hand. Do this only once each turn.

Lands you control lose all mana abilities and have “{T}: This land deals 1 damage to any target.”
If a nonland source you control would deal damage, prevent that damage and create that many Treasure tokens.

If a creature you control attacking causes a triggered ability of a permanent you control to trigger, if that creature is attacking alone, that ability triggers two additional times.

Flash
Whenever Convol enters or attacks, untap target creature you control. Until end of turn, it has base power and toughness 5/5 and gains hexproof and “Whenever this creature deals combat damage to a player, draw two cards.”

Deathtouch
Ward—Pay 4 life.
Whenever Cybele of the Frozen Faith deals combat damage to a player, you may skip your next turn. If you do, at the beginning of your next turn's upkeep, each opponent discards their hand, you draw seven cards, then put seven +1/+1 counters on Cybele.

Flying
Whenever a creature you control attacks alone, if a creature you control that isn't attacking has flying, the attacking creature gains flying until end of turn. The same is true for first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, protection, and trample.

Vigilance
Whenever Darisha enters or attacks, create a white enchantment token named Stratagem with “Creatures you control get +1/+1.”

Haste
Whenever you cast a spell that targets Efimia of the Horse, create a 1/1 white Human creature token if this is the first time this ability has resolved this turn. If it's the second time, creatures you control get +1/+0 and gain haste until end of turn. If it's the third time, creatures you control gain menace until end of turn.

Flash
When Eleanor, Royal Captain enters, target legendary creature gains indestructible until end of turn.
Cybersoul {5}{W/B}

As long as it's your turn, Elektes has first strike.
At the beginning of combat on your turn, target creature you control gets +X/+0 until end of turn, where X is your devotion to red and white.

Legendary permanents you control have “{1}, {T}: Tap target creature.”
At the beginning of each end step, scry 1 if you spent {U} to activate abilities this turn, Ema deals 1 damage to each opponent if you spent {R}, and put a +1/+1 counter on a creature you control if you spent {W}.

Whenever you cycle a card, exile up to one other target creature you control, then return that card to the battlefield under its owner's control.

This spell can't be countered.
First strike, haste
Whenever an opponent casts a spell during your turn, End of Mutations deals 5 damage to them.

When this creature enters or leaves the battlefield, exchange your graveyard and library, then shuffle.
Whenever a creature dies, draw a card.

Trample
Other creatures have base power and toughness 3/3.
At the beginning of your end step, sacrifice Eo unless you attacked this turn.

Indestructible
As long as your devotion to white and blue is less than seven, Ephara isn't a creature.
Whenever you cast an enchantment spell, draw a card.

This spell can't be countered.
Whenever Eviviva enters or attacks, create a 2/2 red Warrior creature token with “Whenever this creature deals combat damage to a player, exile the top card of your library. You may play that card this turn.”

Deathtouch
Other Gorgons, Snakes, and Basilisks you control get +1/+1.
Whenever a creature with deathtouch you control deals combat damage to a player or planeswalker, create a Treasure token.

Whenever you draw or cache a card, put a +1/+1 counter on up to one target land.
At the beginning of combat on your turn, untap up to one target land you control. It becomes a 3/3 creature with vigilance, hexproof, and haste until end of turn. It's still a land.

You and General Diadem have hexproof as long as you control an artifact creature.
{1}, Sacrifice another nonland, non-Knight permanent: Create a 3/3 black Cyborg Knight artifact creature token.

Flying
When Gereishin enters, if it was cast, you may cast a Dragon spell or a spell with mana value 6 or less from your hand without paying its mana cost.
Once during each of your turns, when you spend less mana to cast a spell than its mana value, you may have Gereishin deal damage to up to one target creature equal to the difference.

When Gnosa, Research Executive enters, gain control of target nonland permanent until the end of your next turn. Untap it.
Each permanent you control but don't own must be the targets of spells its owner casts if able.

Amity — Whenever you attack with Higana and exactly one other creature, create a 3/3 green, blue, and red Dragon creature token. If the other attacking creature was a Dragon, the token has flying. If it also had flying, the token has vigilance. If it also had vigilance, the token has double strike.
{1}{W}: Create Shigana, a legendary 2/2 white Beast creature token with haste.

When High Senator Talpa enters, choose target opponent. If you control fewer creatures than that player, create a number of 1/1 colorless Soldier creature tokens equal to the difference. If you have fewer cards in hand than that player, draw cards equal to the difference.

When Hoenn Champion enters, create a creature token for each of the following characteristics.
• 3/3 white and black Bird with flying, vigilance, and haste.
• 2/4 red Bird Warrior with double strike, vigilance, and haste.
No more than two creatures can attack each combat. No more than two creatures can block each combat.