Spooky20

If an opponent searched their library this turn, you may pay {0} rather than pay this spell's mana cost. Target opponent mills thirteen cards.

Choose one — • Target nonsnow permanent becomes snow until end of turn. • Target snow permanent isn't snow until end of turn. Draw a card at the...

Flying Whenever Shriekgeist deals combat damage to a player, that player mills two cards.

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Master of Etherium's power and toughness are each equal to the number of artifacts you control. Other artifact creatures you control get +1/+1.

Draw two cards.

Imprint — When Phyrexian Ingester enters the battlefield, you may exile target nontoken creature. Phyrexian Ingester gets +X/+Y, where X is the ex...

Target player mills X cards. If this spell was cast from a graveyard, that player mills twice that many cards instead. Flashback {X}{U} (You may ca...

Flying Whenever Kinscaer Harpoonist attacks, you may have target creature lose flying until end of turn.

When Aether Adept enters the battlefield, return target creature to its owner's hand.

Draw two cards, then sacrifice a permanent.

Enchant permanent When Psychic Overload enters the battlefield, tap enchanted permanent. Enchanted permanent doesn't untap during its controller'...

Shroud (This creature can't be the target of spells or abilities.) Whenever Neurok Commando deals combat damage to a player, you may draw a card.

Ninjutsu {U}{B} ({U}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)...

Until end of turn, creatures you control gain "Whenever this creature deals damage to an opponent, you may return target creature that player contr...

Enchant artifact Enchanted artifact has "At the beginning of your upkeep, sacrifice this artifact unless you pay its mana cost."

Flying

Enchant creature Enchanted creature has "{T}: Draw a card." {W}: Enchanted creature gains vigilance until end of turn.

Pirate Ship can't attack unless defending player controls an Island. {T}: Pirate Ship deals 1 damage to any target. When you control no Islands, ...

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {U}, {T}: Draw a card, then discard a card.

Flying Metalcraft — {U}: Exile Argent Sphinx. Return it to the battlefield under your control at the beginning of the next end step. Activate only ...

{U}, {T}: Target snow land becomes a 2/2 blue Elemental creature with flying. It's still a land.

Whenever Nemesis of Reason attacks, defending player mills ten cards.