Awesome Cyber Monday

As Psychic Allergy enters the battlefield, choose a color. At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that playe...

Each player may discard up to three cards. Mind Bomb deals damage to each player equal to 3 minus the number of cards they discarded this way.

{T}: Destroy target creature with islandwalk.

When you cast this spell, counter it unless you sacrifice a land. At the beginning of each player's upkeep, that player sacrifices a land. When the...

Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Is...

Enchant creature Enchanted creature can't attack unless its controller pays {3}.

Giant Shark can't attack unless defending player controls an Island. Whenever Giant Shark blocks or becomes blocked by a creature that has been dea...

Flying {U}{U}{U}: Regenerate Ghost Ship.

{U}{U}: Tap target creature without flying.

Enchant land At the beginning of the upkeep of enchanted land's controller, destroy that land unless that player pays {1} or 1 life.

When Electric Eel enters the battlefield, it deals 1 damage to you. {R}{R}: Electric Eel gets +2/+0 until end of turn and deals 1 damage to you.

{B}: Regenerate Drowned.

{U}: Until end of turn, if you tap a land you control for mana, it produces {U} instead of any other type.

When Dance of Many enters the battlefield, create a token that's a copy of target nontoken creature. When Dance of Many leaves the battlefield, exi...

{U}, {T}: Add {C}{C}{C}.

Target player reveals their hand and discards all nonland cards.

Until end of turn, if damage would be dealt to any creature, you may have that damage dealt to you instead.

{T}: Witch Hunter deals 1 damage to target player or planeswalker. {1}{W}{W}, {T}: Return target creature an opponent controls to its owner's hand.

Destroy all Goblins.

You may choose not to untap Preacher during your untap step. {T}: For as long as Preacher remains tapped, gain control of target creature of an opp...

First strike; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with...

Attacking creatures get +1/+1 until end of turn.

{T}: Destroy target Aura attached to a creature you control.