Serpent Specialist

Deathtouch
Power-up — {3}{G}: Put two +1/+1 counters on this creature. (Activate each power-up ability only once. Reduce the cost by its mana cost if it entered this turn.)

Shang-Chi, Master of Kung Fu

You may activate abilities of creatures you control as though those creatures had haste.
{T}: Add two mana of any one color. Spend this mana only to activate abilities of creature sources.

She-Hulk, Jade Defender

Reach, trample
Power-up — {4}{G}{G}: Destroy up to one target artifact or enchantment. Put a +1/+1 counter on She-Hulk. (Activate each power-up ability only once. Reduce the cost by her mana cost if she entered this turn.)

Super Strength

Enchant creature
Enchanted creature gets +4/+4 and has trample and ward {1}. (Whenever enchanted creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)

Kree Commandos

Flying, vigilance
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

The Thing, Ben Grimm

Trample
Whenever one or more Heroes you control deal damage to a player, put two +1/+1 counters on The Thing.

Tigra, Feline Fury

Flash
Trample
Whenever you gain life, put a +1/+1 counter on Tigra.

Training Regimen

Creatures you control with +1/+1 counters on them have trample.
At the beginning of combat on your turn, put a +1/+1 counter on target creature you control.

Squirrel

The Unbeatable Squirrel Girl

Do You Like Squirrels? — Whenever The Unbeatable Squirrel Girl enters or attacks, create a 1/1 green Squirrel creature token.
I LOVE Squirrels! — {1}{G}{G}{G}: Create X 1/1 green Squirrel creature tokens, where X is the number of Squirrels you control.

Undercover Skrull

As long as there are two or more creature cards in your graveyard, this creature gets +2/+2 and is all creature types.
{T}: Add one mana of any color.

Wakandan Royal Guard

Vigilance
When this creature enters, put a +1/+1 counter on target creature. If that creature is another Hero, put two +1/+1 counters on it instead.

The Tiger God

White Tiger, Ava Ayala

Power-up — {5}{G}: Put a +1/+1 counter on White Tiger and create The Tiger God, a legendary 4/4 green Cat God creature token with "The Tiger God can't be blocked by more than one creature." (Activate each power-up ability only once. Reduce the cost by her mana cost if she entered this turn.)

World War Hulk

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — The next red or green creature spell you cast this turn can be cast without paying its mana cost.
II — Put three +1/+1 counters on target creature you control.
III — Choose target creature you control. Until end of turn, double its power and toughness and it gains trample.

Abomination, Terrifying Titan

Trample
Power-up — {5}{R/G}{R/G}: Put a +1/+1 counter on Abomination. He fights up to one target creature an opponent controls. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)

Absorbing Man

Vigilance
At the beginning of your first main phase, until your next turn, Absorbing Man becomes a copy of up to one target artifact, non-Aura enchantment, or land, except his name is Absorbing Man, he's a legendary 4/4 Human Villain creature in addition to his other types, and he has vigilance.

Agent Maria Hill

Whenever Agent Maria Hill becomes tapped to pay a teamwork cost, put a +1/+1 counter on her and draw a card.

Marvel Super Heroes