
Hydro-Man, Fluid Felon | Legendary Creature | Elemental Villain | Whenever you cast a blue spell, if Hydro-Man is a creature, he gets +1/+1 until end of turn.
At the beginning of your end step, untap Hydro-Man. Until your next turn, he becomes a land and gains "{T}: Add {U}." (He's not a creature during that time.) | David Palumbo

Lady Octopus, Inspired Inventor | Legendary Creature | Human Scientist Villain | Whenever you draw your first or second card each turn, put an ingenuity counter on Lady Octopus.
{T}: You may cast an artifact spell from your hand with mana value less than or equal to the number of ingenuity counters on Lady Octopus without paying its mana cost. | Claudio Pozas

Mysterio, Master of Illusion | Legendary Creature | Human Villain | When Mysterio enters, create a 3/3 blue Illusion Villain creature token for each nontoken Villain you control. Exile those tokens when Mysterio leaves the battlefield. | Leonardo Santanna

Spider-Woman, Stunning Savior | Legendary Creature | Spider Human Hero | Flying
Venom Blast — Artifacts and creatures your opponents control enter tapped. | Mirko Failoni

Superior Spider-Man | Legendary Creature | Spider Human Hero | Mind Swap — You may have Superior Spider-Man enter as a copy of any creature card in a graveyard, except his name is Superior Spider-Man and he's a 4/4 Spider Human Hero in addition to his other types. When you do, exile that card. | Claudio Pozas

Symbiote Spider-Man | Legendary Creature | Symbiote Spider Hero | Whenever this creature deals combat damage to a player, look at that many cards from the top of your library. Put one of them into your hand and the rest into your graveyard.
Find New Host — {2}{U/B}, Exile this card from your graveyard: Put a +1/+1 counter on target creature you control. It gains this card's other abilities. Activate only as a sorcery. | Igor Krstic

Spider-Man 2099 | Legendary Creature | Spider Human Hero | From the Future — You can't cast Spider-Man 2099 during your first, second, or third turns of the game.
Double strike, vigilance
At the beginning of your end step, if you've played a land or cast a spell this turn from anywhere other than your hand, Spider-Man 2099 deals damage equal to his power to any target. | Slawomir Maniak

Jackal, Genius Geneticist | Legendary Creature | Human Scientist Villain | Trample
Whenever you cast a creature spell with mana value equal to Jackal's power, copy that spell, except the copy isn't legendary. Then put a +1/+1 counter on Jackal. (The copy becomes a token.) | Arif Wijaya