Target creature gains flying until end of turn.
Flashback

Counter target spell. If the spell is countered this way, exile it with three time counters on it instead of putting it into its owner's graveyard. If it doesn't have suspend, it gains suspend. (At the beginning of its owner's upkeep, remove a counter from that card. When the last is removed, the player plays it without paying its mana cost. If it's a creature, it has haste.)

Scry 2, then draw a card.

This spell costs less to cast for each spell your opponents have cast this turn.
Scry 2, then draw two cards.

Tap all creatures without flying.

Choose a card name, then target spell's controller reveals their hand. If a card with the chosen name is revealed this way, counter that spell.

Counter target creature spell. Draw a card, then discard a card.

Counter target creature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Counter target creature or enchantment spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Return target nonland permanent to its owner's hand.
Foretell

This spell costs less to cast if it targets an attacking creature.
Target creature gets -4/-0 until end of turn.
Draw a card.

As an additional cost to cast this spell, return a land you control to its owner's hand.
Counter target spell.

Return target creature to its owner's hand. Create a Treasure token.

Return target nonland permanent to its owner's hand. If it was attacking, create a 1/1 colorless Drone artifact creature token with flying and "This token can block only creatures with flying."

Counter target spell. If an artifact or creature spell is countered this way, put that card onto the battlefield under your control instead of into its owner's graveyard.

Target creature gets -4/-0 until end of turn. (Then exile this card. You may cast the creature later from exile.)

Return each nonland permanent that's not historic to its owner's hand.

Target nonland permanent's owner puts it on their choice of the top or bottom of their library. Scry 2.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may shuffle up to four target cards from your graveyard into your library.

Counter target spell. Its controller mills three cards.

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

Target creature has base power and toughness 1/1 until end of turn.

This spell costs less to cast if it targets an attacking or tapped creature.
Target creature's owner puts it on their choice of the top or bottom of their library.

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

As an additional cost to cast this spell, return a permanent you control to its owner's hand.
Counter target spell.

Unattach all Equipment from target creature.

Counter target spell. Look at the top four cards of your library, then put them back in any order.

During your turn, this spell costs less to cast.
End the turn. (Exile all spells and abilities from the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)

Seek three nonland cards, then nonland cards in your hand perpetually gain "This spell costs less to cast."

Look at the top five cards of your library. Exile one of them face down and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost if it's an instant spell with mana value 2 or less. If you don't, put that card into your hand.