Kain, Traitorous Dragoon

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

Whenever a creature you control with a counter on it deals combat damage to a player, you draw a card and you lose 1 life.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Whenever this creature deals combat damage to a player, that player loses life equal to the number of creature cards in your graveyard.

Tap another untapped Rogue you control: This creature gains deathtouch until end of turn.

Whenever this creature deals combat damage to a player, that player mills three cards. (They put the top three cards of their library into their graveyard.)

Whenever one or more creatures you control that entered this turn deal combat damage to a player, create a 5/5 red Dragon Spirit creature token with flying.

: Creatures you control gain haste until end of turn.

Menace, lifelink

Whenever a Knight you control deals combat damage to a player, put a +1/+1 counter on that creature and create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")

Whenever you attack, target creature gains deathtouch until end of turn.

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token, then look at the top card of that player's library and exile it face down. You may cast that card for as long as it remains exiled. (A Treasure token is an artifact with ", Sacrifice this token: Add one mana of any color.")