At the beginning of each player's end step, Citadel of Pain deals X damage to that player, where X is the number of untapped lands they control.

Sacrifice a land: Coastal Hornclaw gains flying until end of turn.

Sacrifice two lands: Return Coffin Puppets from your graveyard to the battlefield. Activate this ability only during your upkeep and only if you control a Swamp.

Flying
, Sacrifice X lands: Put X +1/+1 counters on Copper-Leaf Angel.

At the beginning of your upkeep, sacrifice Darba unless you pay .

Whenever Death Charmer deals combat damage to a creature, that creature's controller loses 2 life unless they pay .

Search target player's library for up to seven cards and exile them. Then that player shuffles their library.

Destroy target land. Its controller loses 2 life.

Destroy target land. Devastate deals 1 damage to each creature and each player.

Flying, vigilance

Whenever a nontoken creature enters the battlefield, its controller creates a token that's a copy of that creature.
Whenever a nontoken creature leaves the battlefield, exile all tokens with the same name as that creature.
When Dual Nature leaves the battlefield, exile all tokens created with Dual Nature.

Each player creates a green Elephant creature token. Those creatures have "This creature's power and toughness are each equal to the number of creature cards in its controller's graveyard."

: Return target creature card from a graveyard to its owner's hand. Any player may activate this ability but only any time they could cast a sorcery.

Enchant creature
Enchanted creature can block any number of creatures.

, Sacrifice a land: Draw a card. Any player may activate this ability.

Exile target attacking creature unless its controller pays .

Sacrifice a land: Fault Riders gets +2/+0 and gains first strike until end of turn. Activate this ability only once each turn.

Fen Stalker has fear as long as you control no untapped lands. (It can't be blocked except by artifact creatures and/or black creatures.)

Whenever Fickle Efreet attacks or blocks, flip a coin at end of combat. If you lose the flip, an opponent gains control of Fickle Efreet.

You may discard a Mountain card rather than pay this spell's mana cost.
Flameshot deals 3 damage divided as you choose among one, two, or three target creatures.