Command Tower

{T}: Add one mana of any color in your commander's color identity.

Venom, Evil Unleashed

Deathtouch
{2}{B}, Exile this card from your graveyard: Put two +1/+1 counters on target creature. It gains deathtouch until end of turn. Activate only as a sorcery.

Venom, Eddie Brock

Menace (This creature can't be blocked except by two or more creatures.)
Whenever another creature dies, put a +1/+1 counter on Venom. If that creature was a Villain, draw a card.

Venom, Deadly Devourer

Vigilance, menace
{3}: Exile target creature card from a graveyard. When you do, put X +1/+1 counters on target Symbiote, where X is the exiled card's toughness.

Venom Blast

Put two +1/+1 counters on target creature you control. It deals damage equal to its power to up to one other target creature.

Tombstone, Career Criminal

When Tombstone enters, return target Villain card from your graveyard to your hand.
Villain spells you cast cost {1} less to cast.

Lethal Protection

Destroy target creature. Return up to one target creature card from your graveyard to your hand.

Sol Ring

Symbiote Spawn

When this creature dies, each opponent loses 2 life and you gain 2 life.

Twisted Spider-Clone

When this creature enters, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.

Cleopatra, Exiled Pharaoh

Allies — At the beginning of your end step, put a +1/+1 counter on each of up to two other target legendary creatures.
Betrayal — Whenever a legendary creature with counters on it dies, draw a card for each counter on it. You lose 2 life.

Arcane Signet

Prowler, Misguided Mentor

Prowler can't be blocked by creatures with power 2 or less.
Whenever Prowler deals combat damage to a player, put a +1/+1 counter on another target creature you control.

Spider-Man, Miles Morales

Vigilance, trample (Attacking doesn't cause this creature to tap. He can deal excess combat damage to the player he's attacking.)
Whenever Spider-Man enters or attacks, put a +1/+1 counter on each other creature you control. Those creatures gain trample until end of turn.