Deathtouch
Whenever Qion enters or attacks, you may reveal the top two cards of your library. If you do, you gain life equal to their total mana value, put them into your hand, then lose 7 life.

Whenever you attack with exactly two creatures, draw a card. Prevent all damage that would be dealt to creatures you control this turn.

Exchange control of target spell or creature you control and target spell or creature an opponent controls. Controllers of spells exchanged this way may choose new targets for them.

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.

Whenever this Subroutine runs, each player may shuffle their hand and graveyard into their library, then draw seven cards.

Counter target spell. Create an X/X blue and black Fish creature token, where X is the total number of permanents with flash you control and the number of instant cards in your graveyard.

Solidarity
{1}{R}: Choose a creature type. Ragecloak Shifter gets +2/+0 and becomes that type in addition to its other types until end of turn.

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, ward {3}
Other Yetis you control get +1/+1.
At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, create a 3/3 green Yeti creature token with trample.

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.

Ward—Discard a card.
Whenever Reborn Fisher attacks, choose a nonland card name, then defending player reveals their hand and discards a card with that name if able.

Vigilance
Whenever Reborn Reef attacks, target card in your graveyard gains surface until end of turn. The surface cost is equal to its mana cost.

At the beginning of your upkeep, choose one. If you control twelve or more permanents, choose all instead.
• Create a 1/1 green Citizen creature token.
• Create a Treasure token.
• Create a Weapon token.

Trample
When this creature enters, separate your graveyard into two piles. An opponent chooses one of those piles. Put that pile into your hand and shuffle the other into your library.

Whenever Recurring Visions enters or you cast a spell which had its flashback cost paid, surveil 3.

Menace
Corrupt — When this creature enters, if you control a permanent with greater mana value, exile the top card of your library. You may play it on any turn a creature you control dealt damage to a player.

{T}, Sacrifice Redeveloped Cityscape: Search your library for a basic land card and put it onto the battlefield tapped. Then you may exile a land card from your hand. If you do, search your library for a basic land card, reveal it, and put it into your hand. Then shuffle.

You gain X life, then look at the top X cards of your library, where X is the greatest mana value among permanents you control. Reveal up to two creature, enchantment, and/or land cards from among them and put them into your hand. Put the rest on the bottom in a random order.

Other creatures you control get +1/+1 and have vigilance.
Spellcharge 5

When Renowned Roughrider enters or leaves the battlefield, create a 1/1 white Human creature token. Then if you control four or more creatures, put a +1/+1 counter on a creature you control.
Wander {4}{W}{W}

Reach
Replicrawler gets +1/+1 for each other artifact creature you control.
If you would create a token, you may pay {B}. If you do, create a token that's a copy of Replicrawler instead.

When Research Grant enters, look at the top three cards of your library. Put one into your hand and the rest into your graveyard.
You've cast two or more spells this turn.
You've drawn two or more cards this turn.

Target opponent discards their hand, then draws seven cards. You discard your hand, then exile the top seven cards of that player's library. You may play those cards as long as they remain exiled, and mana of any type can be spent to cast them.

You may cast permanent spells as though they had flash.
During your second main phase, pay {Q} rather than {T} to activate abilities.

Time loop
I, II — Look at the top six cards of your library. Put up to one nonland permanent card with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
III — Creatures you control gain double strike until end of turn.