Merieke Ri Berit doesn't untap during your untap step.
: Gain control of target creature for as long as you control Merieke Ri Berit. When Merieke Ri Berit leaves the battlefield or becomes untapped, destroy that creature. It can't be regenerated.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
All creatures get -1/-0.
: All creatures get -1/-0 until end of turn.

, : Exile the top card of your library. Until the beginning of your next upkeep, you may play that card.

Skip your draw step.
Whenever you discard a card, exile that card from your graveyard.
Pay 1 life: Exile the top card of your library face down. Put that card into your hand at the beginning of your next end step.

Creatures with landwalk abilities can be blocked as though they didn't have those abilities.

, : Target 1/1 creature gets +1/+2 until end of turn.

Enchant land
Enchanted land has ": Target creature gets +2/+1 until end of turn."

: Look at the top three cards of target player's library, then put them back in any order.

Creatures without flying don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay for each creature chosen this way. If the player does, untap those creatures.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
This creature can't be blocked by non-Wall creatures.

, Pay 1 life: Counter target white spell.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Fiery Justice deals 5 damage divided as you choose among any number of targets. Target opponent gains 5 life.

When this enchantment enters, sacrifice this enchantment unless you sacrifice four creatures.
Tap an untapped Swamp you control: This enchantment deals 1 damage to any target.

Sacrifice this artifact: Flip a coin. If you win the flip, this artifact deals damage to target opponent or planeswalker equal to the number of creatures you control. If you lose the flip, this artifact deals damage to you equal to the number of creatures that opponent or that planeswalker's controller controls.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
: Put a music counter on target creature. If it doesn't have "At the beginning of your upkeep, destroy this creature unless you pay for each music counter on it," it gains that ability.

Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the beginning of your upkeep, choose a land type. This creature gains landwalk of the chosen type until end of turn. (It can't be blocked as long as defending player controls a land of that type.)

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
, Discard a card: Draw a card.

Attacking creatures get +1/+0 and gain trample until end of turn.

, Discard a card at random: This enchantment deals 2 damage to any target.

For each artifact or creature card in target opponent's graveyard, add and you gain 1 life.

Black creatures can't attack unless their controller sacrifices a land of their choice for each black creature they control that's attacking. (This cost is paid as attackers are declared.)

Enchant land you control
Enchanted land has ", : Create a 0/1 white Caribou creature token."
Sacrifice a Caribou token: You gain 1 life.

At the beginning of your upkeep, put a time counter on this artifact.
, , Sacrifice this artifact: This artifact deals damage equal to the number of time counters on it to each creature and each player.

, : Target player chooses a card name, then reveals the top card of their library. If that card has the chosen name, that player puts it into their hand. Otherwise, they put it into their graveyard and this artifact deals 2 damage to them.

As this creature enters, choose an opponent.
Lost Order of Jarkeld's power and toughness are each equal to 1 plus the number of creatures the chosen player controls.

Change the target of target spell with a single target.

: Return this creature to its owner's hand.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
When this enchantment enters, you gain 20 life.
When this enchantment leaves the battlefield, you lose 20 life.

, : You may exile a nonland card from your hand. You may cast that card for as long as it remains exiled. Put a charge counter on this artifact and note the type and amount of mana spent to pay this activation cost. Activate only if there are no charge counters on this artifact.
, Remove a charge counter from this artifact: Add this artifact's last noted type and amount of mana. Spend this mana only to cast the last card exiled with this artifact.

, : You may tap or untap target artifact, creature, or land.

At the beginning of each player's end step, tap all untapped Islands that player controls and this enchantment deals X damage to the player, where X is the number of Islands tapped this way.

Enchant creature
At the beginning of the upkeep of enchanted creature's controller, that player may pay . If they don't, this Aura deals 2 damage to that player and you tap that creature.

, , Sacrifice this artifact: Search target player's library for three cards and exile them. Then that player shuffles.