Clue

Agent 13, Sharon Carter

Whenever a creature you control attacks alone, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Captain America, Wings of Freedom

Flying, first strike, ward {1}
Whenever Captain America attacks, each other Hero you control gets +X/+X until end of turn, where X is Captain America's toughness.

HYDRA Infiltration

When this enchantment enters, target opponent discards two cards.
Whenever a creature you control attacks alone, target opponent loses 1 life and you gain 1 life.

Villain

HYDRA Troopers

When this creature enters, create a tapped 2/1 black Villain creature token with menace if there are two or more creature cards in your graveyard. Otherwise, mill two cards. (Put the top two cards of your library into your graveyard.)

Kingpin's Enforcers

Lifelink
{2}{B}, Sacrifice an artifact or creature: Draw a card.

Klaw, Sonic Subjugator

Sonic Attack — When Klaw enters, target player reveals a number of cards from their hand equal to one plus the number of creature cards in your graveyard. You choose one of them. That player discards that card.

Madame Masque

When Madame Masque enters, she connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)
Whenever you draw your second card each turn, create a 2/1 black Villain creature token with menace. (It can't be blocked except by two or more creatures.)

The Masters of Evil

Other Villains you control get +2/+1.
{1}{B}, Discard this card: Search your library for a Plan card, reveal it, put it into your hand, then shuffle.

M.O.D.O.K.

Flying, lifelink
Mental Organism — Pay 3 life: M.O.D.O.K. connives. Activate only during your turn. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)
Designed Only for Killing — Creatures your opponents control get -1/-1.

Moonstone, Harsh Mistress

Flying
Whenever you discard a card, you may exile that card from your graveyard. If you do, until the end of your next turn, you may play that card.

Ninja of the Hand

Deathtouch
Power-up — {4}{B}: Each opponent discards a card. Put a +1/+1 counter on this creature. (Activate each power-up ability only once. Reduce the cost by its mana cost if it entered this turn.)

Project Deathlok Soldier

{2}{B}: Return this card from your graveyard to your hand.

Captain Marvel, Earth's Protector

Flash
Flying, lifelink
Power-up — {5}{W}{W}: Put a +1/+1 counter and an indestructible counter on Captain Marvel. (Activate each power-up ability only once. Reduce the cost by her mana cost if she entered this turn.)

Red Room Recruit

When this creature enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Robot Villain

Robot Domination

Whenever one or more creature cards are put into your graveyard from anywhere, you draw a card, lose 1 life, and put a plan counter on this enchantment.
When the third plan counter is put on this enchantment, sacrifice it and create three 2/2 colorless Robot Villain artifact creature tokens.

Ronin, Shadow Stalker

Pay 2 life: Add two mana of any one color. Spend this mana only to cast Equipment spells or activate equip abilities. Activate only once each turn.
{T}, Sacrifice an Equipment attached to Ronin: Target creature gets -4/-4 until end of turn. Activate only as a sorcery.

Marvel Super Heroes