Aetherize

Return all attacking creatures to their owner's hand.

Riptide Laboratory

{T}: Add {C}.
{1}{U}, {T}: Return target Wizard you control to its owner's hand.

Clever Impersonator

You may have Clever Impersonator enter as a copy of any nonland permanent on the battlefield.

Amass the Components

Draw three cards, then put a card from your hand on the bottom of your library.

Arcane Adaptation

As Arcane Adaptation enters, choose a creature type.
Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Breakthrough

Draw four cards, then choose X cards in your hand and discard the rest.

Arcane Savant

Before you shuffle your deck to start the game, you may reveal this card from your deck and exile an instant or sorcery card you drafted that isn't in your deck.
When Arcane Savant enters, copy a card you exiled with cards named Arcane Savant. You may cast the copy without paying its mana cost.

Naban, Dean of Iteration

If a Wizard entering under your control causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Academy Journeymage

This spell costs {1} less to cast if you control a Wizard.
When Academy Journeymage enters, return target creature an opponent controls to its owner's hand.

Cloudkin Seer

Flying
When Cloudkin Seer enters, draw a card.

Sol Ring

Estrid's Invocation

You may have Estrid's Invocation enter as a copy of an enchantment you control, except it has "At the beginning of your upkeep, you may exile this enchantment. If you do, return it to the battlefield under its owner's control."

Relic Amulet

Whenever you cast an instant, sorcery, or Wizard spell, put a charge counter on Relic Amulet.
{2}, {T}, Remove all charge counters from Relic Amulet: It deals that much damage to target creature.

Archaeomancer

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

Catalog

Archaeomender

When Archaeomender enters, return target artifact card from your graveyard to your hand.

Borrowing 100,000 Arrows

Draw a card for each tapped creature target opponent controls.

Aether Tradewinds

Return target permanent you control and target permanent you don't control to their owners' hands.