Voidslime

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

Eaten by Piranhas

Flash (You may cast this spell any time you could cast an instant.)
Enchant creature
Enchanted creature loses all abilities and is a black Skeleton creature with base power and toughness 1/1. (It loses all other colors, card types, and creature types.)

Invert the Skies

Creatures your opponents control lose flying until end of turn if {G} was spent to cast this spell, and creatures you control gain flying until end of turn if {U} was spent to cast this spell. (Do both if {G}{U} was spent.)

Didn't Say Please

Counter target spell. Its controller mills three cards.

Alchemist's Retrieval

Cleave {1}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Return target nonland permanent [you control] to its owner's hand.

Blink of an Eye

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, draw a card.

Whirlwind

Mystic Genesis

Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value.

Fumble

Return target creature to its owner's hand. Gain control of all Auras and Equipment that were attached to it, then attach them to another creature.

Broken Wings

Destroy target artifact, enchantment, or creature with flying.

Springsage Ritual

Destroy target artifact or enchantment. You gain 4 life.

Trygon Predator

Flying
Whenever this creature deals combat damage to a player, you may destroy target artifact or enchantment that player controls.

An Offer You Can't Refuse

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Atraxa's Fall

Destroy target artifact, battle, enchantment, or creature with flying.

Frogify

Enchant creature
Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1. (It loses all other card types and creature types.)

Lay Bare

Counter target spell. Look at its controller's hand.

Wear Down

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.)
Destroy target artifact or enchantment. If the gift was promised, instead destroy two target artifacts and/or enchantments.

Plummet

Primeval Light

Destroy all enchantments target player controls.

Shower of Arrows

Destroy target artifact, enchantment, or creature with flying. Scry 1.

Dispel

Creeping Mold

Destroy target artifact, enchantment, or land.

Foil

You may discard an Island card and another card rather than pay this spell's mana cost.
Counter target spell.

Ichthyomorphosis

Enchant creature
Enchanted creature loses all abilities and is a blue Fish with base power and toughness 0/1.

Disperse

Return target nonland permanent to its owner's hand.

Kasmina's Transmutation

Enchant creature
Enchanted creature loses all abilities and has base power and toughness 1/1.

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Artisan's Sorrow

Destroy target artifact or enchantment. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Creeping Corrosion

Keep Safe

Counter target spell that targets a permanent you control.
Draw a card.

Nature's Claim

Destroy target artifact or enchantment. Its controller gains 4 life.

Last Word

This spell can't be countered.
Counter target spell.

Mistakes Were Made

Destroy target artifact or enchantment. Create a 1/1 green Squirrel creature token for each fire extinguisher you can see from your seat.

Return to the Earth

Turn Aside

Counter target spell that targets a permanent you control.

Dissolve

Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Geistwave

Return target nonland permanent to its owner's hand. If you controlled that permanent, draw a card.

Unsummon

Return target creature to its owner's hand.

Krosan Grip

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Destroy target artifact or enchantment.

Sagittars' Volley

Destroy target creature with flying. Sagittars' Volley deals 1 damage to each creature with flying your opponents control.

Fade from History

Each player who controls an artifact or enchantment creates a 2/2 green Bear creature token. Then destroy all artifacts and enchantments.

Counterspell

Thwart the Enemy

Prevent all damage that would be dealt this turn by creatures your opponents control.

Wilt

Destroy target artifact or enchantment.
Cycling {2} ({2}, Discard this card: Draw a card.)

Unsubstantiate

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

Witness Protection

Enchant creature
Enchanted creature loses all abilities and is a green and white Citizen creature with base power and toughness 1/1 named Legitimate Businessperson. (It loses all other colors, card types, creature types, and names.)

Back to Nature

Kenrith's Transformation

Enchant creature
When Kenrith's Transformation enters, draw a card.
Enchanted creature loses all abilities and is a green Elk creature with base power and toughness 3/3. (It loses all other card types and creature types.)

Slice in Twain

Destroy target artifact or enchantment.
Draw a card.

Plasm Capture

Counter target spell. At the beginning of your next first main phase, add X mana in any combination of colors, where X is that spell's mana value.