The Game Cave

Creature — Fish Beast

This creature can't attack unless defending player controls an Island. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

Creature — Serpent

{3}{U}: Return this creature to its owner's hand.

Creature — Plant Zombie

Scavenge {0} ({0}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Land

{T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Sliver spell. {5}, {T}: Create a 1/1 colorless Sliver creature token. Activate only if you control a Sliver.

Legendary Creature — Sliver

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

Legendary Creature — Sliver Mutant

{3}: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle. {3}: Gain control of target Sliver. (This effect lasts indefinitely.)

Legendary Creature — Goblin Artificer

Sacrifice an artifact: Target artifact gains indestructible until end of turn.

Legendary Creature — Phyrexian Goblin Artificer

{T}, Sacrifice an artifact: Add an amount of {R} equal to the sacrificed artifact's mana value. Spend this mana only to cast artifact spells or activate abilities of artifacts.

Creature — Plant Beast

This creature enters with a number of stun counters on it equal to three minus X. If X is 2 or less, it enters tapped. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Creature — Giant Warrior

This creature enters with two -1/-1 counters on it. At the beginning of your end step, you may remove a counter from this creature. When you do, return target creature card with power 2 or less from your graveyard to the battlefield.

Creature — Horror

When this creature enters, each player sacrifices a creature of their choice.

Instant

Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller.

Sorcery

Smiting Helix deals 3 damage to any target and you gain 3 life. Flashback {R}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creature — Human Wizard

Whenever this creature attacks, each other attacking creature gains fear until end of turn. (They can't be blocked except by artifact creatures and/or black creatures.)

Enchantment

Players can't untap more than one creature during their untap steps.

Creature — Elemental Shaman

{T}: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elementals.

Enchantment — Aura

Enchant creature Enchanted creature gets +1/+1 and has flying. When a Ninja you control enters, you may return this card from your graveyard to the battlefield attached to that creature.

Sorcery

For each of up to X target creatures, create a red Aura enchantment token named Smoke Blessing attached to that creature. Those tokens have enchant creature and "When enchanted creature dies, it deals 1 damage to its controller and you create a Treasure token."

Artifact

At the beginning of your upkeep, you may put a soot counter on this artifact. At the beginning of each player's upkeep, that player sacrifices a permanent of their choice for each soot counter on this artifact.

Creature — Eldrazi

Devoid (This card has no color.) Flying At the beginning of your upkeep, sacrifice a creature. Whenever you sacrifice a creature, draw a card.

Enchantment

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Artifact — Vehicle

Flying Whenever this Vehicle attacks or blocks, you may draw a card. If you do, discard a card. Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Artifact

{X}, Sacrifice this artifact: Create X 1/1 green Snake creature tokens. Activate only as a sorcery.

Instant

Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Enchantment — Aura

Enchant creature Enchanted creature gets +1/+1 and has "Whenever this creature deals damage to an opponent, you may draw a card." Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Creature — Human Wizard

Flash When this creature enters, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Legendary Creature — Dinosaur Cat Nightmare

Mutate {2}{B/R}{W}{W} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Double strike Whenever this creature mutates, it deals 4 damage to target creature or planeswalker an opponent controls and you gain 4 life.

Enchantment

{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 next end step.

Basic Snow Land — Forest

({T}: Add {G}.)

Basic Snow Land — Island

({T}: Add {U}.)

Basic Snow Land — Plains

({T}: Add {W}.)