Keyword: Surveil

Menace
Desmond Miles gets +1/+0 for each other Assassin you control and each Assassin card in your graveyard.
Whenever Desmond Miles deals combat damage to a player, surveil X, where X is the amount of damage it dealt to that player.

Lydia Frye can’t be blocked by creatures with power 3 or greater.
At the beginning of your end step, surveil X, where X is the number of tapped Assassins you control. (Look at the top X cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Lydia Frye can’t be blocked by creatures with power 3 or greater.
At the beginning of your end step, surveil X, where X is the number of tapped Assassins you control. (Look at the top X cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Lydia Frye can’t be blocked by creatures with power 3 or greater.
At the beginning of your end step, surveil X, where X is the number of tapped Assassins you control. (Look at the top X cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Delirium — As long as there are four or more card types among cards in your graveyard, Dragon’s Rage Channeler gets +2/+2, has flying, and attacks each combat if able.

, : Surveil 1. If all your commanders have been revealed, draw a card instead.

Equipped creature gets +1/+1 and has “Whenever this creature attacks, surveil 2.” (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
, Sacrifice Candlestick: Draw a card.
Equip

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Draw a card.

Flying
Whenever you attack, surveil X, where X is the number of opponents being attacked.
At the beginning of each end step, if three or more cards were put into your graveyard from anywhere other than the battlefield this turn, draw a card.

Flash
When Whisper Agent enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Flying
When Watcher in the Mist enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

At the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

When Starving Revenant enters, surveil 2. Then for each card you put on top of your library, you draw a card and you lose 3 life.
Descend 8 — Whenever you draw a card, if there are eight or more permanent cards in your graveyard, target opponent loses 1 life and you gain 1 life.

When Starving Revenant enters, surveil 2. Then for each card you put on top of your library, you draw a card and you lose 3 life.
Descend 8 — Whenever you draw a card, if there are eight or more permanent cards in your graveyard, target opponent loses 1 life and you gain 1 life.

: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
: Until end of turn, each creature card in your graveyard gains “Escape—, Exile four other cards from your graveyard.” (You may cast a card with escape from your graveyard for its escape cost.)

: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
: Until end of turn, each creature card in your graveyard gains “Escape—, Exile four other cards from your graveyard.” (You may cast a card with escape from your graveyard for its escape cost.)

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Draw a card.

Flying
Flying backup (When this creature enters the battlefield, put a flying counter on target creature. If that’s another creature, it also gains the following ability until end of turn.)
Whenever this creature deals combat damage to a player, planeswalker, or battle, surveil 1.

: Add .
, : Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Creatures you control have vigilance and “: Surveil 1.” (To surveil 1, look at the top card of your library. You may put that card into your graveyard.)
, Exile Tocasia, Dig Site Mentor from your graveyard: Return any number of target artifact cards with total mana value 10 or less from your graveyard to the battlefield. Activate only as a sorcery.

Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Draw a card.

Creatures you control have vigilance and “: Surveil 1.” (To surveil 1, look at the top card of your library. You may put that card into your graveyard.)
, Exile Tocasia, Dig Site Mentor from your graveyard: Return any number of target artifact cards with total mana value 10 or less from your graveyard to the battlefield. Activate only as a sorcery.

Defender
Coastal Bulwark gets +2/+0 as long as you control an Island.
, : Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Uurg, Spawn of Turg’s power is equal to the number of land cards in your graveyard.
At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
, Sacrifice a land: You gain 2 life.