Force Spike

Counter target spell unless its controller pays {1}.

Electrickery

Electrickery deals 1 damage to target creature you don't control.
Overload {1}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Mountain

Rite of Flame

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

Raven Guild Initiate

Morph—Return a Bird you control to its owner's hand. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Airborne Aid

Draw a card for each Bird on the battlefield.

Artifact Blast

Swiftwater Cliffs

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

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Active Volcano

Choose one —
• Destroy target blue permanent.
• Return target Island to its owner's hand.

Island

Cloudfin Raptor

Flying
Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Warden of Evos Isle

Flying
Creature spells with flying you cast cost {1} less to cast.

Storm Crow

Flying (This creature can't be blocked except by creatures with flying or reach.)

Crash

You may sacrifice a Mountain rather than pay this spell's mana cost.
Destroy target artifact.

Rites of Refusal

Discard any number of cards. Counter target spell unless its controller pays {3} for each card discarded this way.

Surging Flame

Ripple 4 (When you cast this spell, you may reveal the top four cards of your library. You may cast spells with the same name as this spell from among those cards without paying their mana costs. Put the rest on the bottom of your library.)
Surging Flame deals 2 damage to any target.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Flash Flood

Choose one —
• Destroy target red permanent.
• Return target Mountain to its owner's hand.

Confound

Counter target spell that targets a creature.
Draw a card.

Leap of Flame

Replicate {U}{R} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)
Target creature gets +1/+0 and gains flying and first strike until end of turn.

Obsessive Search

Draw a card.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Lonely Sandbar

This land enters tapped.
{T}: Add {U}.
Cycling {U} ({U}, Discard this card: Draw a card.)

Sage Owl

Flying
When this creature enters, look at the top four cards of your library, then put them back in any order.

Cryptic Serpent

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.