When A Killer Among Us enters, create a 1/1 white Human creature token, a 1/1 blue Merfolk creature token, and a 1/1 red Goblin creature token. Then secretly choose Human, Merfolk, or Goblin.

Sacrifice A Killer Among Us, Reveal the creature type you chose: If target attacking creature token is the chosen type, put three +1/+1 counters on it and it gains deathtouch until end of turn.

+1: Add . Chandra, Dressed to Kill deals 1 damage to up to one target player or planeswalker.

+1: Exile the top card of your library. If it's red, you may cast it this turn.

−7: Exile the top five cards of your library. You may cast red spells from among them this turn. You get an emblem with "Whenever you cast a red spell, this emblem deals X damage to any target, where X is the amount of mana spent to cast that spell."

All creatures get -X/-X until end of turn, where X is the greatest mana value of a commander you own on the battlefield or in the command zone.

Destroy target creature. Create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

Target creature can't block this turn and becomes a Coward in addition to its other types until end of turn.

Time travel.

You gain 10 life. Then if you have more life than an opponent, create a 5/5 white Giant Warrior creature token.

Trample

Whenever a creature an opponent controls dies, Gimli, Counter of Kills deals 1 damage to that creature's controller.

, : Tap all other artifacts. They don't untap during their controllers' untap steps for as long as Kill Switch remains tapped.

Choose one or more —

• Destroy target artifact.

• Destroy target creature.

• Kill Maim Burn deals 3 damage to target player.

Flying

: Killer Bees gets +1/+1 until end of turn.

At the beginning of your upkeep, reveal the top card of your library. If it's a creature card, put it onto the battlefield. That creature gains haste until end of turn. Sacrifice it at the beginning of the next end step.

: Killer Whale gains flying until end of turn.

Lifelink

Menace (This creature can't be blocked except by two or more creatures.)

Spells you cast that target a creature cost less to cast.

For each creature, its controller sacrifices it unless they pay X life.

Whenever Kill-Zone Acrobat attacks, you may sacrifice another creature or artifact. If you do, Kill-Zone Acrobat gains flying until end of turn.

Enchant creature

Enchanted creature has ": This creature deals 1 damage to target creature."

As long as enchanted creature is a Wizard, it has ": This creature deals 2 damage to target creature."

Enchant creature

Enchanted creature gets +3/+0 and has menace.

: Switch a Killbot or Mary O'Kill in your hand with one on the battlefield. (If a creature is tapped, the switched creature is tapped. The same is true for untapped, attacking, blocking, enchanted, equipped, and targeted. Any counters on a creature are on the switched creature instead.)

Creatures you control have wither.

Whenever a creature an opponent controls dies, if it had 0 or less toughness, you and that player lose 1 life and you draw a card.

Destroy target non-Angel, non-Demon, non-Devil, non-Dragon creature.

Play with the top card of your library revealed.

As long as the top card of your library is an artifact or creature card, Skill Borrower has all activated abilities of that card. (If any of the abilities use that card's name, use this creature's name instead.)

Target creature gets +2/+0 and gains first strike until end of turn.

Create a 3/3 colorless Phyrexian Golem artifact creature token.

Splice onto instant or sorcery (As you cast an instant or sorcery spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Squad—, Discard a card. (As an additional cost to cast this spell, you may pay its squad cost any number of times. When this creature enters, create that many tokens that are copies of it.)

When Thrill-Kill Disciple dies, create a Junk token.