Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Flash Ward {2} Probing Telepathy — Whenever a creature entering the battlefield under an opponent's control causes a triggered ability of that creature to trigger, you may copy that ability. You may choose new targets for the copy.

When Aether Adept enters the battlefield, return target creature to its owner's hand.

When Archaeomancer enters the battlefield, return target instant or sorcery card from your graveyard to your hand.

When Augur of Bolas enters the battlefield, look at the top three cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Flash (You may cast this spell any time you could cast an instant.) Whenever you cast a spell during an opponent's turn, put a +1/+1 counter on Brineborn Cutthroat.

When Displacer Beast enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.) Displacement — {3}{U}: Return Displacer Beast to its owner's hand.

{1}, {T}: Draw a card, then discard a card.

Whenever Ghostly Pilferer becomes untapped, you may pay {2}. If you do, draw a card. Whenever an opponent casts a spell from anywhere other than their hand, draw a card. Discard a card: Ghostly Pilferer can't be blocked this turn.

Flying Iymrith, Desert Doom has ward {4} as long as it's untapped. Whenever Iymrith deals combat damage to a player, draw a card. Then if you have fewer than three cards in hand, draw cards equal to the difference.

Flying {2}{U}: Target creature gains flying until end of turn.

This spell costs {1} less to cast for each card you own in exile and in your graveyard that's an instant card, a sorcery card, or a card that has an Adventure. Ward {4} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {4}.)

Defender {4}{U}: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)

Flash (You may cast this spell any time you could cast an instant.) Flying {3}{U}: Draw a card.

Whenever you cast an instant or sorcery spell, create a 2/2 blue Drake creature token with flying.

Enchant creature You control enchanted creature.

Enchant creature Enchanted creature has flying and "Whenever this creature deals combat damage to a player, venture into the dungeon." (Enter the first room or advance to the next room.)

Whenever you cast a noncreature spell, you may have Riddleform become a 3/3 Sphinx creature with flying in addition to its other types until end of turn. {2}{U}: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Counter target creature or planeswalker spell. Venture into the dungeon. (Enter the first room or advance to the next room.)

Target creature gets -4/-0 until end of turn. Draw a card.

Roll a d20. 1—9 | Draw two cards. 10—19 | Scry 2, then draw two cards. 20 | Scry 3, then draw three cards.

Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1.

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

Switch target creature's power and toughness until end of turn. Draw a card.

Return target spell or creature to its owner's hand.

Choose one — • Fight the Current — Return target nonland permanent to its owner's hand. • Find a Crossing — Target creature gets +1/+0 until end of turn and can't be blocked this turn.

If you control two or more other lands, Hall of Storm Giants enters the battlefield tapped. {T}: Add {U}. {5}{U}: Until end of turn, Hall of Storm Giants becomes a 7/7 blue Giant creature with ward {3}. It's still a land. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)

Return six target nonland permanents to their owners' hands.

Create a token that's a copy of target creature you control, except the token has flying and it isn't legendary.

Dungeoneer's Pack enters the battlefield tapped. {2}, {T}, Sacrifice Dungeoneer's Pack: You take the initiative, gain 3 life, draw a card, and create a Treasure token. Activate only as a sorcery. (A Treasure token is an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")