Discard a card: Wild Mongrel gets +1/+1 and becomes the color of your choice until end of turn.

Target creature gets +2/+2 until end of turn. If it's blocking, instead put two +1/+1 counters on it.

Cycling (, Discard this card: Draw a card.)

Other green creatures you control get +1/+1.

Other white creatures you control get +1/+1.

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

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Flying, vigilance

Cycling (, Discard this card: Draw a card.)

Forestcycling (, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.)

Flying

Whenever one or more creatures deal combat damage to you, each opponent sacrifices a creature that dealt combat damage to you this turn. The Ring tempts you.

Discard a card: Witch-king of Angmar gains indestructible until end of turn. Tap it.

Target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it. If its toughness is 0 or less, it's still put into its owner's graveyard.)

Cycling (, Discard this card: Draw a card.)

Whenever Wolf of Devil's Breach attacks, you may pay and discard a card. If you do, Wolf of Devil's Breach deals damage to target creature or planeswalker equal to the discarded card's mana value.

Enchant creature

Enchanted creature gets -4/-4.

Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Double strike

Bloodrush — , Discard Wrecking Ogre: Target attacking creature gets +3/+3 and gains double strike until end of turn.

+1: Return up to one target land card from your graveyard to your hand.

−1: Wrenn and Six deals 1 damage to any target.

−7: You get an emblem with "Instant and sorcery cards in your graveyard have retrace." (You may cast instant and sorcery cards from your graveyard by discarding a land card in addition to paying their other costs.)

When Wretched Camel dies, if you control a Desert or there is a Desert card in your graveyard, target player discards a card.

Flying

When CARDNAME deals damage to an opponent, that player discards a card unless they challenge you. If challenged, and you show them two black cards in your hand, they must discard two cards.

Protection from Humans

Pay 1 life, Sacrifice another creature: Put a -1/-1 counter on up to one target creature and draw a card.

, Discard a card: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Choose one —

• Foil Their Scheme — Counter target spell.

• Learn Their Secrets — Draw two cards, then discard two cards.

(: Add , , or .)

Zagoth Triome enters the battlefield tapped.

Cycling (, Discard this card: Draw a card.)

Equipped creature has flying.

Whenever equipped creature deals combat damage to a player, draw a card, then discard a card.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever Zhang Liao, Hero of Hefei deals damage to an opponent, that opponent discards a card.

(: Add , , or .)

Ziatora's Proving Ground enters the battlefield tapped.

Cycling (, Discard this card: Draw a card.)

Deathtouch

At the beginning of your end step, if you descended this turn, each opponent may discard a card or sacrifice a permanent. Zoyowa Lava-Tongue deals 3 damage to each opponent who didn't. (You descended if a permanent card was put into your graveyard from anywhere.)

Whenever an opponent draws their first card each turn, if it's not their turn, you create a 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target."

Whenever one or more Devils you control attack one or more players, you and those players each draw a card, then discard a card at random.