Chaos Rising

Basic

{Lightning}{Colorless} Thunder Wave 20
Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.

Weakness {Fighting} ×2

Retreat {Colorless}{Colorless}

Mareep

Mega Rising

{Lightning} Rear Kick 10

Weakness {Fighting} +20

Retreat {Colorless}

Wisdom of Sea and Sky

{Lightning} Static Shock 20

Weakness {Fighting} +20

Retreat {Colorless}

Destined Rivals

{Colorless} Procurement
Search your deck for an Item card, reveal it, and put it into your hand. Then, shuffle your deck.
{Lightning} Tiny Bolt 10

Weakness {Fighting} ×2

Retreat {Colorless}

Team Rocket's Mareep

Scarlet & Violet

{Lightning} Static Shock 10
{Lightning}{Colorless}{Colorless} Electro Ball 40

Weakness {Fighting} ×2

Retreat {Colorless}

SVP Black Star Promos

{Lightning} Headbutt 10
{Lightning}{Colorless} Lightning Ball 20

Weakness {Fighting} ×2

Retreat {Colorless}

Crown Zenith Galarian Gallery

{Colorless} Rear Kick 10
{Lightning}{Colorless} Electro Ball 30

Weakness {Fighting} ×2

Retreat {Colorless}

Evolving Skies

Chilling Reign

{Colorless} Growl
During your opponent's next turn, the Defending Pokémon's attacks do 20 less damage (before applying Weakness and Resistance).
{Lightning}{Colorless} Static Shock 20

Weakness {Fighting} ×2

Retreat {Colorless}{Colorless}

Darkness Ablaze

{Lightning} Static Shock 20

Weakness {Fighting} ×2

Retreat {Colorless}

Team Up

{Lightning} Shock Bolt 30
Discard all Lightning Energy from this Pokémon.

Weakness {Fighting} ×2

Resistance {Metal} -20

Retreat {Colorless}

Lost Thunder

Ability Fluffy Pillow
Once during your turn (before your attack), if this Pokémon is your Active Pokémon, you may leave your opponent’s Active Pokémon Asleep.

{Colorless}{Colorless} Tackle 20

Weakness {Fighting} ×2

Resistance {Metal} -20

Retreat {Colorless}

{Lightning} Thunder Shock 10
Flip a coin. If heads, your opponent’s Active Pokémon is now Paralyzed.

Weakness {Fighting} ×2

Resistance {Metal} -20

Retreat {Colorless}

Steam Siege

{Colorless} Thunder Wave
Flip a coin. If heads, your opponent's Active Pokémon is now Paralyzed.
{Lightning}{Colorless} Tackle 20

Weakness {Fighting} ×2

Resistance {Metal} -20

Retreat {Colorless}

Dragons Exalted

{Colorless} Cotton Guard
During your opponent's next turn, any damage done to this Pokémon by attacks is reduced by 20 (after applying Weakness and Resistance).
{Lightning}{Colorless} Thunder Jolt 30
Flip a coin. If tails, this Pokémon does 10 damage to itself.

Weakness {Fighting} ×2

Retreat {Colorless}

Call of Legends

{Lightning} Static Shock 10

Weakness {Fighting} x2

Resistance {Metal} -20

Retreat {Colorless}

HS trainer Kit (Raichu)

{Colorless} Static Electricity
Search your deck for a number of Lightning Energy cards up to the number of Mareep in play (both yours and your opponent's) and attach them to Mareep. Shuffle your deck afterward.
{Colorless}{Colorless} Ram 20

Weakness {Fighting} ×2

Resistance {Metal} -20

Retreat {Colorless}

HeartGold SoulSilver

Platinum

 Minor Errand-Running
Search your deck for a basic Energy card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.
{Lightning} Expand 10
During your opponent's next turn, any damage done to Mareep by attacks is reduced by 10 (after applying Weakness and Resistance).

Weakness {Fighting} +10

Resistance {Metal} -20

Retreat {Colorless}

POP Series 7

{Lightning} Thundershock 10
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
{Lightning}{Colorless} Static Shock 20

Weakness {Fighting} +10

Resistance {Metal} -20

Retreat {Colorless}

Secret Wonders

Dragon Frontiers

{Colorless} Tail Whap 10

Weakness {Fighting} ×2

Retreat {Colorless}

Mareep δ

EX trainer Kit 2 (Minun)

{Colorless} Minor Errand-Running
Search your deck for a basic Energy card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.
{Lightning}{Colorless} Quick Attack 10+
Flip a coin. If heads, this attack does 10 damage plus 10 more damage.

Weakness {Fighting} undefined

Retreat {Colorless}

Unseen Forces

{Lightning} Tackle 10

Weakness {Fighting} ×2

Resistance {Metal} -30

Retreat {Colorless}

Team Rocket Returns

{Colorless} Minor Errand-Running
Search your deck for a basic Energy card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.
{Lightning}{Colorless} Quick Attack 10+
Flip a coin. If heads, this attack does 10 damage plus 10 more damage.

Weakness {Fighting} ×2

Retreat {Colorless}

Dragon

{Colorless} Jolt
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.

Weakness {Fighting} x2

Resistance {Metal} -30

Retreat {Colorless}

Aquapolis

{Colorless} Charge
Attach 1 Lightning Energy card from your discard pile to Mareep.
{Lightning}{Colorless} Tail Slap 20

Weakness {Fighting} x2

Retreat {Colorless}

Expedition Base Set

{Lightning} Thundershock 10
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.

Weakness {Fighting} x2

Retreat {Colorless}

Neo Destiny

{Colorless} Headbutt 10

Weakness {Fighting} ×2

Retreat {Colorless}

Neo Discovery

{Lightning}{Colorless} Thunder Jolt 30
Flip a coin. If tails, Mareep does 10 damage to itself.

Weakness {Fighting} ×2

Retreat {Colorless}

Neo Genesis

{Lightning} Static Electricity
For each Mareep in play, you may search your deck for a Energy card and attach it to Mareep. Shuffle your deck afterward.
{Lightning}{Lightning} Thundershock 20
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.

Weakness {Fighting} ×2

Retreat {Colorless}