Burnout

Counter target instant spell if it's blue.
Draw a card at the beginning of the next turn's upkeep.

Illumination

Counter target artifact or enchantment spell. Its controller gains life equal to its mana value.

Stromgald Cabal

{T}, Pay 1 life: Counter target white spell.

Frontline Medic

Battalion — Whenever this creature and at least two other creatures attack, creatures you control gain indestructible until end of turn.
Sacrifice this creature: Counter target spell with {X} in its mana cost unless its controller pays {3}.

Verdant Command

Choose two —
• Target player creates two tapped 1/1 green Squirrel creature tokens.
• Counter target loyalty ability of a planeswalker.
• Exile target card from a graveyard.
• Target player gains 3 life.

Mana Tithe

Counter target spell unless its controller pays {1}.

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Deathgrip

Avoid Fate

Counter target instant or Aura spell that targets a permanent you control.

Tibalt's Trickery

Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.

Dawn Charm

Choose one —
• Prevent all combat damage that would be dealt this turn.
• Regenerate target creature.
• Counter target spell that targets you.

Brine Shaman

{T}, Sacrifice a creature: Target creature gets +2/+2 until end of turn.
{1}{U}{U}, Sacrifice a creature: Counter target creature spell.

Artifact Blast

Equinox

Enchant land
Enchanted land has "{T}: Counter target spell if it would destroy a land you control."

Bind

Counter target activated ability. (Mana abilities can't be targeted.)
Draw a card.

Ouphe Vandals

{G}, Sacrifice this creature: Counter target activated ability from an artifact source and destroy that artifact if it's on the battlefield. (Mana abilities can't be targeted.)

Withering Boon

As an additional cost to cast this spell, pay 3 life.
Counter target creature spell.

Lifeforce

Brown Ouphe

{1}{G}, {T}: Counter target activated ability from an artifact source. (Mana abilities can't be targeted.)

Unyaro Griffin

Flying
Sacrifice this creature: Counter target red instant or sorcery spell.

Goblin Artisans

{T}: Flip a coin. If you win the flip, draw a card. If you lose the flip, counter target artifact spell you control that isn't the target of an ability from another creature named Goblin Artisans.

Rust

Counter target activated ability from an artifact source. (Mana abilities can't be targeted.)

Molten Influence

Counter target instant or sorcery spell unless its controller has Molten Influence deal 4 damage to them.