Uncounterable

Uncounterable is a slang term for an attribute of a spell that precludes it from being countered.

Description
A spell's ability that grants uncounterability can be a static - or triggered ability. Uncounterability can also be granted by other spells.

This ability is primary in red and green, and secondary in blue. Red tends to have spells that can't be countered while green tends to have creatures that can't be countered. When blue does "can't be countered," which is less often, it's usually a more control-oriented card. There is no artifact that can not be countered.

Under a previous version of the rules, uncounterable spells that were targeted spells used the text "can't be countered by spells or abilities"; if the spell had no legal targets at the time it would resolve, it was "countered on resolution"; specifying that the spell could not be countered by spells or abilities ensured that the game rules were still able to counter it. With the Dominaria rules update, the rules on spells fizzling were changed so that, if a targeted spell had no legal targets at the time it would resolve, the spell would simply be put into the graveyard without using the keyword action "counter".

Heated Debate added the Strixhaven set-specific reminder text (This includes by the ward ability.) to "This spell can't be countered".

Uncounterable spells
Creatures • Akroma, Angel of Fury

• Allosaurus Shepherd

• Altered Ego

• Blurred Mongoose

• Carnage Tyrant

• Chromium, The Mutable

• Cragplate Baloth

• Dragonlord Dromoka</c>

• Emrakul, the Aeons Torn</c>

• Gaea's Revenge</c>

• Great Sable Stag</c>

• Isao, Enlightened Bushi</c>

• Kavu Chameleon</c>

• Koma, Cosmos Serpent</c>

• Lightning Mare</c>

• Loxodon Smiter</c>

• Mistcutter Hydra</c>

• Nezahal, Primal Tide</c>

• Niv-Mizzet, Parun</c>

• Pearl-Lake Ancient</c>

• Petrified Wood-Kin</c>

• Prowling Serpopard</c>

• Root Sliver</c>

• <c>Scragnoth</c>

• <c>Shifting Ceratops</c>

• <c>Skylasher</c>

• <c>Spellbreaker Behemoth</c>

• <c>Sphinx of the Final Word</c>

• <c>Surrak Dragonclaw</c>

• <c>Terra Stomper</c>

• <c>Thrun, the Last Troll</c>

• <c>Toski, Bearer of Secrets</c>

• <c>Vexing Beetle</c>

• <c>Vexing Shusher</c>

Instants • <c>Abrupt Decay</c>

• <c>Combust</c>

• <c>Commence the Endgame</c>

• <c>Counterflux</c>

• <c>Dovin's Veto</c>

• <c>Dragonlord's Prerogative</c> (if a Dragon was revealed)

• <c>Fry</c>

• <c>Heated Debate</c>

• <c>Inescapable Blaze</c>

• <c>Last Word</c>

• <c>Overwhelming Denial</c>

• <c>Rending Volley</c>

• <c>Savage Summoning</c>

• <c>Tears of Valakut</c>

• <c>Urza's Rage</c>

• <c>Veil of Summer</c>

• <c>Volcanic Fallout</c>

Sorceries • <c>Banefire</c> (If X is 5 or more)

• <c>Demonfire</c> (Hellbent)

• <c>Exquisite Firecraft</c> (Spell Mastery)

• <c>Obliterate</c>

• <c>Slaughter Games</c>

• <c>Supreme Verdict</c>

• <c>Thought Distortion</c>

• <c>Wreak Havoc</c>

Planeswalkers • <c>Chandra, Awakened Inferno</c>

Spells that grant Uncounterable
Creatures • <c>Cunning Nightbonder</c> (to spells with Flash)

• <c>Destiny Spinner</c> (to enchantments and creatures)

• <c>Gaea's Herald</c> (to creatures)

• <c>Prowling Serpopard</c> (to creatures)

• <c>Root Sliver</c> (to Slivers)

• <c>Spellbreaker Behemoth</c> (to creatures you control with power 5 or greater)

• <c>Sphinx of the Final Word</c> (to instants and sorceries you control)

• <c>Surrak Dragonclaw</c> (to creatures you control)

• <c>Taigam, Ojutai Master</c> (to instants, sorceries, and Dragon spells)

• <c>Thryx, the Sudden Storm</c> (to converted mana cost 5 or greater spells)

• <c>Vexing Shusher</c> (pay to make any target spell uncounterable)

Enchantments • <c>Leyline of Lifeforce</c> (to creatures)

• <c>Rhythm of the Wild</c> (to creatures)

Instants • <c>Autumn's Veil</c> (for blue or black spells)

• <c>Determined</c>

• <c>Savage Summoning</c> (to next creature)

• <c>Veil of Summer</c>

Sorceries • <c>Insist</c> (to next creature)

• <c>Overmaster</c> (to next instant or sorcery spell)

Planeswalkers • <c>Domri, Anarch of Bolas</c> ( loyalty ability, to creature spells)

Lands • <c>Boseiju, Who Shelters All</c>

• <c>Cavern of Souls</c> (creatures of chosen type)