Eighth Edition

Spineless Thug can't block.

All creatures get -1/-1 until end of turn.

Whenever a creature you control deals combat damage to a player, that player discards a card.

{B}{B}, {T}: Destroy target white creature.

Whenever a permanent is returned to a player's hand, that player discards a card.

Vicious Hunger deals 2 damage to target creature and you gain 2 life.

Flying When Vampiric Spirit enters the battlefield, you lose 4 life.

Enchant creature Enchanted creature gets +2/+1.

Target player loses 4 life and you gain 4 life.

Destroy target green creature. It can't be regenerated. Draw a card.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When Serpent Warrior enters the battlefield, you lose 3 life.

Destroy target nonblack creature. It can't be regenerated. You gain life equal to its toughness.

When Ravenous Rats enters the battlefield, target opponent discards a card.

Return target creature card from your graveyard to your hand.

{B}: Primeval Shambler gets +1/+1 until end of turn.

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

{T}, Sacrifice Phyrexian Plaguelord: Target creature gets -4/-4 until end of turn. Sacrifice a creature: Target creature gets -1/-1 until end of turn.

Choose a color. Target player reveals their hand and discards all cards of that color.

Flying (This creature can't be blocked except by creatures with flying or reach.) Nightmare's power and toughness are each equal to the number of S...

{B}{B}, Pay half your life, rounded up: Destroy target nonblack creature. It can't be regenerated.

Target player discards a card for each Swamp you control.

Target player discards two cards.