Flash
Whenever you cast Siflir, Elder Pawn or another spell, if you paid an alternate or additional cost to cast it, draw a card.
Wander {3}{U}{U}

Enchant artifact or creature
Enchanted permanent loses all abilities and doesn't untap during its controller's untap step.
Wander {3}{U}{U}

Choose one —
• Exile target noncreature spell.
• Return target creature spell to its owner's hand. Draw a card.

Counter target spell unless its controller pays {4}. You may untap a land.

Whenever you cast an instant or sorcery spell, Skyward Magus gets +1/+1 and gains flying until end of turn.

Flash
Flying
When Sleeper Strix enters, tap up to one target creature.
You may look at an additional card each time you surveil.

Whenever Smooth Operator deals combat damage to a player, draw a card.

When Snowscryer enters, surveil 3.

At the beginning of your end step, if you control three or more untapped lands, up to one target nonland permanent doesn't untap during its controller's next untap step.

Flying
Drop — When Sphinx of the Soundveins enters, if you didn't cast any creature spells during your last turn, untap up to three lands.

Amity — Whenever you attack with Splashing Mudskipper and exactly one other creature, surveil 1. When Splashing Mudskipper deals combat damage to a player this combat, you may transform it.

Flying
Springsoarer enters with a +1/+1 counter on it if a creature you controlled dealt combat damage to a player this turn.
Wander {2}{U}

Flying
Drop — When Staggering Wyvern enters, if you didn't cast any creature spells during your last turn, tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Flash
Whenever you cast a spell during an opponent's turn, tap up to one target artifact or creature.

Enchant creature
When Stasis Chamber enters, if you control a creature with vigilance, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Steamveil Model enters with a +1/+1 counter on it.

Sterling enters under the control of an opponent of your choice.
At the beginning of your upkeep, surveil 1.
Play with the top card of your library revealed.
Your opponents may play lands and cast spells from the top of your library during their turns, and they may spend mana of any type to cast spells this way.

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.

Ward {2}
Amity — Whenever Surging Mudskipper attacks, surveil 1. You may play that card from your graveyard this turn. If exactly one other creature attacked with it, this ability triggers three times instead.

Scry 3.
Create a 1/1 colorless Thopter artifact creature token with flying.

Counter target spell unless its controller pays {X}. If they do, create an X/X blue and black Fish creature token.

Target creature gains flying until end of turn. Draw a card.

Enchant creature
Once each turn, when enchanted creature becomes tapped, you may untap it or put a stun counter on it.

Flash
When Tempo Arbiter enters, up to one target creature gets -X/-0 until end of turn, where X is the number of artifacts you control.

When Tenki enters, it acclimates.
You can't sacrifice Weather enchantments.
{W}{U}{B}{R}{G}, {T}: Tenki acclimates. This ability costs one mana of any color less to activate for each Weather you control.