Jaws of Stone

Jaws of Stone deals X damage divided as you choose among any number of targets, where X is the number of Mountains you control as you cast this spell.

Prison Term

Enchant creature
Enchanted creature can’t attack or block, and its activated abilities can’t be activated.
Whenever a creature enters the battlefield under an opponent’s control, you may attach Prison Term to that creature.

Faerie Swarm

Flying
Faerie Swarm’s power and toughness are each equal to the number of blue permanents you control.

Reknit

Regenerate target permanent.

Poison the Well

Destroy target land. Poison the Well deals 2 damage to that land’s controller.

Gloomlance

Destroy target creature. If that creature was green or white, its controller discards a card.

Thistledown Duo

Whenever you cast a white spell, Thistledown Duo gets +1/+1 until end of turn.
Whenever you cast a blue spell, Thistledown Duo gains flying until end of turn.

Rivals’ Duel

Choose two target creatures that share no creature types. Those creatures fight each other. (Each deals damage equal to its power to the other.)

Deglamer

Choose target artifact or enchantment. Its owner shuffles it into their library.

Cenn’s Tactician

, : Put a +1/+1 counter on target Soldier creature.
Each creature you control with a +1/+1 counter on it can block an additional creature each combat.

Thieves’ Fortune

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.)
Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Incinerate

Incinerate deals 3 damage to any target. A creature dealt damage this way can’t be regenerated this turn.

Mirror Entity

Changeling (This card is every creature type.)
: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.

Brion Stoutarm

Lifelink
, , Sacrifice another creature: Brion Stoutarm deals damage equal to the sacrificed creature’s power to target player or planeswalker.

Paperfin Rascal

When Paperfin Rascal enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Paperfin Rascal. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher converted mana cost.)

Kinsbaile Balloonist

Flying
Whenever Kinsbaile Balloonist attacks, you may have target creature gain flying until end of turn.

Battle Mastery

Enchant creature
Enchanted creature has double strike. (It deals both first-strike and regular combat damage.)

Aethersnipe

When Aethersnipe enters the battlefield, return target nonland permanent to its owner’s hand.
Evoke (You may cast this spell for its evoke cost. If you do, it’s sacrificed when it enters the battlefield.)

Hearthcage Giant

When Hearthcage Giant enters the battlefield, create two 3/1 red Elemental Shaman creature tokens.
Sacrifice an Elemental: Target Giant creature gets +3/+1 until end of turn.

Guile

Guile can’t be blocked except by three or more creatures.
If a spell or ability you control would counter a spell, instead exile that spell and you may play that card without paying its mana cost.
When Guile is put into a graveyard from anywhere, shuffle it into its owner’s library.

Serra’s Embrace

Enchant creature
Enchanted creature gets +2/+2 and has flying and vigilance.

Cryoclasm

Destroy target Plains or Island. Cryoclasm deals 3 damage to that land’s controller.

Benalish Knight

Flash (You may cast this spell any time you could cast an instant.)
First strike (This creature deals combat damage before creatures without first strike.)