Whenever you draw your second card each turn, scry 1 then put a +1/+1 counter on Melancholic Oracle.

Flying
{5}: Draw a card. Activate only if your devotion to blue is three or greater.

Return target creature or enchantment to its owner's hand. If that permanent's controller has eight or more cards in their graveyard, its owner puts it on the top or bottom of their library instead.

Tap up to two target creatures. Put a stun counter on each of them.

Whenever an enchantment you control enters, each opponent mills two cards.

Flash
When Omen of Deception enters, counter target spell unless its controller pays {2}.
{2}{U}, Sacrifice Omen of Deception: Scry 2.

Enchant creature
Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Ephara.
When you sacrifice Ordeal of Ephara, return up to two target nonland permanents to their owner's hand.

Choose one —
• Draw three cards.
• Return up to two target creatures to their owners' hands.

Defender
Shoreline Crasher gets +2/+0 and can attack as though it didn't have defender as long as it is enchanted.

Untap up to X permanents you control during each other player's untap step, where X is the number of Shrines you control.

Draw two cards.
Return all nonland, nonenchantment permanents to their owners' hands.
You may cast a non-Saga spell with mana value 5 or less from your hand without paying its mana cost.

Flying
Ward {X}, where X is the number of enchantments you control.
Whenever Stormscraper of Ketaphos deals combat damage to a player or planeswalker, create a token that's a copy of another target enchantment you control.

Target creature gains hexproof until end of turn. Untap it.
Draw a card if your devotion to blue is three or greater.

Flash
Whenever Thassa's Tideshaper attacks, defending player mills two cards and you draw a card. Then discard a card unless defending player has eight or more cards in their graveyard.

Whenever you cast a creature spell, put X depth counters on Tide's Ire, where X is that spell's mana value.
Remove ten depth counters from Tide's Ire: Create an 8/8 blue Kraken creature token.
Remove thirty depth counters from Tide's Ire: Create Tromokratis, a legendary 20/20 blue Kraken creature token with trample and hexproof.

Target opponent reveals cards from the top of their library until four land cards are revealed. Exile each card revealed this way. If seven or fewer cards were exiled this way, scry 3.

This spell costs {2} less to cast if your devotion to blue is three or greater.
Scry 2, then draw two cards.

The first spell you cast each turn costs {2} less to cast.
The second spell you cast each turn can't be countered.
Whenever you cast your third spell each turn, draw a card.

Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard.

Enchant creature
Enchanted creature gets +1/+0 and can't be blocked.
{5}{U}, Exile Voyage to the Siren Sea from your graveyard or the battlefield: Draw three cards. This ability costs {1} less for each creature you control that dealt combat damage to an opponent this turn.

Prowess, prowess

Flying
Whenever you draw your second card each turn, tap target nonland permanent.

Flying, deathtouch

Menace
Whenever Aphonai's Reveler attacks, defending player mills two cards. Then if that player has eight or more cards in their graveyard, Aphonai's Reveler gets +2/+1 and gains lifelink until end of turn.

Flying
Favored
Whenever your Champion attacks, you may double its power until end of turn. If you do, sacrifice it at the beginning of the next end step.