When Agent of Treachery enters the battlefield, gain control of target permanent.

At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

{1}{U}: Adapt 1. (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.)

Whenever one or more +1/+1 counters are put on Benthic Biomancer, draw a card, then discard a card.

Vigilance

{T}, Sacrifice Bounty Agent: Destroy target legendary permanent that's an artifact, creature, or enchantment.

Vigilance

When Cataclysmic Gearhulk enters the battlefield, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.

When Coiling Oracle enters the battlefield, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

Flying

Whenever an opponent draws a card, you may draw two cards.

{3}, {T} or {U}, {T}: Return target creature to its owner's hand unless its controller pays {1}.

{T}, Sacrifice Daring Apprentice: Counter target spell.

Sacrifice Dauntless Escort: Creatures you control gain indestructible until end of turn.

Flying

Whenever you gain life, target opponent loses that much life.

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")

Vigilance

If a permanent entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Permanents entering the battlefield don't cause abilities of permanents your opponents control to trigger.

Exile target creature you control, then return it to the battlefield under its owner's control.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

(As this Saga enters and after your draw step, add a lore counter.)

I -- Create a 2/2 red Goblin Shaman creature token with "Whenever this creature attacks, create a Treasure token."

II -- You may discard up to two cards. If you do, draw that many cards.

III -- Exile this Saga, then return it to the battlefield transformed under your control.

{1}, {T}: Create a token that's a copy of another target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

Flying

When Flickerwisp enters the battlefield, exile another target permanent. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Goblin Sharpshooter doesn't untap during your untap step.

Whenever a creature dies, untap Goblin Sharpshooter.

{T}: Goblin Sharpshooter deals 1 damage to any target.

When Hostage Taker enters the battlefield, exile another target creature or artifact until Hostage Taker leaves the battlefield. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.

When Hyrax Tower Scout enters the battlefield, untap target creature.

As Ixidron enters the battlefield, turn all other nontoken creatures face down. (They're 2/2 creatures.)

Ixidron's power and toughness are each equal to the number of face-down creatures on the battlefield.

Sacrifice Kami of False Hope: Prevent all combat damage that would be dealt this turn.

{1}{R}, {T}, Sacrifice Magus of the Wheel: Each player discards their hand, then draws seven cards.

When Man-o'-War enters the battlefield, return target creature to its owner's hand.

Manascape Refractor enters the battlefield tapped.

Manascape Refractor has all activated abilities of all lands on the battlefield.

You may spend mana as though it were mana of any color to pay the activation costs of Manascape Refractor's abilities.

Merieke Ri Berit doesn't untap during your untap step.

{T}: Gain control of target creature for as long as you control Merieke Ri Berit. When Merieke Ri Berit leaves the battlefield or becomes untapped, destroy that creature. It can't be regenerated.

{T}: Target creature you control gains protection from the color of your choice until end of turn.

Flash

When Mystic Snake enters the battlefield, counter target spell.

Flash

When Niambi, Esteemed Speaker enters the battlefield, you may return another target creature you control to its owner's hand. If you do, you gain life equal to that creature's mana value.

{1}{W}{U}, {T}, Discard a legendary card: Draw two cards.

If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card.

Riot (This creature enters the battlefield with your choice of a +1/+1 counter or haste.)

When Ravager Wurm enters the battlefield, choose up to one --

• Ravager Wurm fights target creature you don't control.

• Destroy target land with an activated ability that isn't a mana ability.

Flying

When Resolute Archangel enters the battlefield, if your life total is less than your starting life total, it becomes equal to your starting life total.

Landfall -- Whenever a land enters the battlefield under your control, choose one --

• You may tap or untap target creature.

• Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Whenever Risen Reef or another Elemental enters the battlefield under your control, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, put it into your hand.

Flying

When Rune-Scarred Demon enters the battlefield, search your library for a card, put it into your hand, then shuffle.

{T}: Untap target creature.

Flying

Sacrifice Selfless Spirit: Creatures you control gain indestructible until end of turn.

Whenever another creature enters the battlefield, you may gain 1 life.

Flying

At the beginning of your postcombat main phase, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)

Indestructible

As long as your devotion to blue is less than five, Thassa isn't a creature.

At the beginning of your end step, exile up to one other target creature you control, then return that card to the battlefield under your control.

{3}{U}: Tap another target creature.

You may activate abilities of creatures you control as though those creatures had haste.

{1}, {T}: Untap target creature.

Put any number of cards from your hand on the bottom of your library, then draw that many cards plus one.

Valakut Stoneforge enters the battlefield tapped.

{T}: Add {R}.

Flash

When Venser, Shaper Savant enters the battlefield, return target spell or permanent to its owner's hand.

Whenever a creature an opponent controls becomes the target of a spell or ability you control, gain control of that creature for as long as you control Willbreaker.

Companion -- Your starting deck contains at least twenty cards more than the minimum deck size. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.)

Flying

When Yorion enters the battlefield, exile any number of other nonland permanents you own and control. Return those cards to the battlefield at the beginning of the next end step.

Flying

Whenever Zur the Enchanter attacks, you may search your library for an enchantment card with mana value 3 or less, put it onto the battlefield, then shuffle.