When Kiri-Onna enters the battlefield, return target creature to its owner's hand. Whenever you cast a Spirit or Arcane spell, you may return Kiri-Onna to its owner's hand.
Flying When Kitesail Freebooter enters the battlefield, target opponent reveals their hand. You choose a noncreature, nonland card from it. Exile that card until Kitesail Freebooter leaves the battlefield.
Flying, ward {1} When Kitesail Larcenist enters the battlefield, for each player, choose up to one other target artifact or creature that player controls. For as long as Kitesail Larcenist remains on the battlefield, the chosen permanents become Treasure artifacts with "{T}, Sacrifice this artifact: Add one mana of any color" and lose all other abilities.
Knickknack Ouphe enters the battlefield with X +1/+1 counters on it. When Knickknack Ouphe enters the battlefield, reveal the top X cards of your library. You may put any number of Aura cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order.
When Knight of Autumn enters the battlefield, choose one — • Put two +1/+1 counters on Knight of Autumn. • Destroy target artifact or enchantment. • You gain 4 life.
First strike When Knight of the White Orchid enters the battlefield, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.
When Knight-Captain of Eos enters the battlefield, create two 1/1 white Soldier creature tokens. {W}, Sacrifice a Soldier: Prevent all combat damage that would be dealt this turn.
The strength of Bant's caste system is the unfailing loyalty of its meekest members.
Convoke When Knight-Errant of Eos enters the battlefield, look at the top six cards of your library. You may reveal up to two creature cards with mana value X or less from among them, where X is the number of creatures that convoked Knight-Errant of Eos. Put the revealed cards into your hand, then shuffle.
Enchant creature When Knightly Valor enters the battlefield, create a 2/2 white Knight creature token with vigilance. Enchanted creature gets +2/+2 and has vigilance.
When Knights of the Black Rose enters the battlefield, you become the monarch. Whenever an opponent becomes the monarch, if you were the monarch as the turn began, that player loses 2 life and you gain 2 life.
Imprint — When Knowledge Pool enters the battlefield, each player exiles the top three cards of their library. Whenever a player casts a spell from their hand, that player exiles it. If the player does, they may cast a spell from among other cards exiled with Knowledge Pool without paying its mana cost.
When Kogla and Yidaro enters the battlefield, choose one — • It gains trample and haste until end of turn. • It fights target creature you don't control. {2}{R}{G}, Discard Kogla and Yidaro: Destroy up to one target artifact or enchantment. Shuffle Kogla and Yidaro into your library from your graveyard, then draw a card.
When Kogla, the Titan Ape enters the battlefield, it fights up to one target creature you don't control. Whenever Kogla attacks, destroy target artifact or enchantment defending player controls. {1}{G}: Return target Human you control to its owner's hand. Kogla gains indestructible until end of turn.