Creature spells can't be cast.

Pay 4 life: Destroy Aether Storm. It can't be regenerated. Any player may activate this ability.

: Put a plot counter on Deadly Designs. Any player may activate this ability.

When there are five or more plot counters on Deadly Designs, sacrifice it. If you do, destroy up to two target creatures.

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

Feral Hydra enters with X +1/+1 counters on it.

: Put a +1/+1 counter on Feral Hydra. Any player may activate this ability.

: Flailing Ogre gets +1/+1 until end of turn. Any player may activate this ability.

: Flailing Ogre gets -1/-1 until end of turn. Any player may activate this ability.

Prevent all damage that would be dealt to Glittering Lion.

: Until end of turn, Glittering Lion loses "Prevent all damage that would be dealt to Glittering Lion." Any player may activate this ability.

As Hangman enters, secretly note a word with six to eight letters.

: Target player who doesn't control Hangman guesses the noted word or an unguessed letter in that word. If they guess wrong, put a +1/+1 counter on Hangman. Any player may activate this ability.

When a player guesses the noted word or all of its letters, sacrifice Hangman.

At the beginning of your upkeep, put a time counter on Infinite Hourglass.

All creatures get +1/+0 for each time counter on Infinite Hourglass.

: Remove a time counter from Infinite Hourglass. Any player may activate this ability but only during any upkeep step.

Whenever a creature enters, destroy it.

: Destroy Lethal Vapors. You skip your next turn. Any player may activate this ability.

At the beginning of each player's end step, put a charge counter on Mana Cache for each untapped land that player controls.

Remove a charge counter from Mana Cache: Add . Any player may activate this ability but only during their turn before the end step.

Hexproof

You can't cast noncreature spells.

: Nullhide Ferox loses all abilities until end of turn. Any player may activate this ability.

If a spell or ability an opponent controls causes you to discard Nullhide Ferox, put it onto the battlefield instead of putting it into your graveyard.

Defender (This creature can't attack.)

: Return Quicksilver Wall to its owner's hand. Any player may activate this ability.

: Target creature gains flying until end of turn. Any player may activate this ability.

, Discard a card: Create a 1/1 green Saproling creature token. Any player may activate this ability.

: Squallmonger deals 1 damage to each creature with flying and each player. Any player may activate this ability.

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.)

Pay 2 life or : Counter target red or green spell. Any player may activate this ability.

Pay 5 life: Destroy Volrath's Dungeon. Any player may activate this ability but only during their turn.

Discard a card: Target player puts a card from their hand on top of their library. Activate only as a sorcery.

: Warmonger deals 1 damage to each creature without flying and each player. Any player may activate this ability.

: Target creature gains protection from the color of its controller's choice until end of turn. Any player may activate this ability.

First strike

: Zerapa Minotaur loses first strike until end of turn. Any player may activate this ability.