MTG

Whenever an opponent casts a creature spell, if Opal Acrolith is an enchantment, Opal Acrolith becomes a 2/4 Soldier creature. {0}: Opal Acrolith b...

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the nex...

First strike, haste Echo {2}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrific...

At the beginning of your upkeep, flip a coin. If you lose the flip, return Scoria Wurm to its owner's hand.

Whenever a player taps an Island for mana, Scald deals 1 damage to that player.

At the beginning of your upkeep, you may put a verse counter on Rumbling Crescendo. {R}, Sacrifice Rumbling Crescendo: Destroy up to X target lands...

Okk can't attack unless a creature with greater power also attacks. Okk can't block unless a creature with greater power also blocks.

Destroy each artifact with converted mana cost X or less.

When Monk Idealist enters the battlefield, return target enchantment card from your graveyard to your hand.

Create X 1/1 red Goblin creature tokens.

When Goblin Matron enters the battlefield, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle you...

Whenever Goblin Lackey deals damage to a player, you may put a Goblin permanent card from your hand onto the battlefield.

{T}: Destroy target creature with power 4 or greater.

Whenever Goblin Cadets blocks or becomes blocked, target opponent gains control of it. (This removes Goblin Cadets from combat.)

Fault Line deals X damage to each creature without flying and each player.

Creatures without flying can't block this turn.

Whenever Electryte deals combat damage to defending player, it deals damage equal to its power to each blocking creature.

Enchant creature Whenever enchanted creature deals combat damage to a player, that player sacrifices a land.

Gain control of all permanents you own. (This effect lasts indefinitely.) Cycling {2} ({2}, Discard this card: Draw a card.)

Creatures can't block.

Arc Lightning deals 3 damage divided as you choose among one, two, or three targets.

At the beginning of each player's end step, Antagonism deals 2 damage to that player unless one of their opponents was dealt damage this turn.

Until end of turn, you may play cards from your graveyard. If a card would be put into your graveyard from anywhere this turn, exile that card inst...

Flying, vigilance Echo {2}{W}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifi...