You and target player exchange control of the creature you each control with the highest converted mana cost. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest cost, their controller chooses one of them.

At the beginning of each player's upkeep, Karma deals damage to that player equal to the number of Swamps they control.

: Add .
: Add or . Karplusan Forest deals 1 damage to you.

Keldon Warlord's power and toughness are each equal to the number of non-Wall creatures you control.

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

Artifacts, creatures, and lands your opponents control enter the battlefield tapped.

When Kjeldoran Dead enters the battlefield, sacrifice a creature.
: Regenerate Kjeldoran Dead.

: All combat damage that would be dealt to you by unblocked creatures this turn is dealt to Kjeldoran Royal Guard instead.

Flying; first strike; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Protection from white
: Knight of Stromgald gains first strike until end of turn.
: Knight of Stromgald gets +1/+0 until end of turn.

Enchant creature
When Krovikan Fetish enters the battlefield, draw a card at the beginning of the next turn's upkeep.
Enchanted creature gets +1/+1.

, Discard a nonblack card: Draw a card.
, Discard a black card: Draw two cards, then discard one of them.

Whenever Labyrinth Minotaur blocks a creature, that creature doesn't untap during its controller's next untap step.

Enchant creature
Enchanted creature has swampwalk. (It can't be blocked as long as defending player controls a Swamp.)

Trample
Leviathan enters the battlefield tapped and doesn't untap during your untap step.
At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan.
Leviathan can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)

: Untap target land.

Lhurgoyf's power is equal to the number of creature cards in all graveyards and its toughness is equal to that number plus 1.

You have no maximum hand size.
If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

: Counter target black spell.

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.