Soul-Scar Mage

Prowess
If a source you control would deal noncombat damage to a creature an opponent controls, put that many -1/-1 counters on that creature instead.

Island

Quicksilver Dagger

Enchant creature
Enchanted creature has "{T}: This creature deals 1 damage to target player or planeswalker. You draw a card."

Thermo-Alchemist

Defender
{T}: This creature deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap this creature.

Propaganda

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Zuran Spellcaster

{T}: This creature deals 1 damage to any target.

Summary Dismissal

Exile all other spells and counter all abilities.

Mountain

Prodigal Sorcerer

Ball Lightning

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Horseshoe Crab

Intruder Alarm

Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

Rootwater Hunter

Swiftwater Cliffs

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {U} or {R}.

Razorfin Hunter

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Vulshok Sorcerer

Haste
{T}: This creature deals 1 damage to any target.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.