Reroute

Change the target of target activated ability with a single target. (Mana abilities can't be targeted.)
Draw a card.

Kindle the Carnage

Discard a card at random. If you do, Kindle the Carnage deals damage equal to that card's mana value to each creature. You may repeat this process any number of times.

Frenzied Goblin

Whenever this creature attacks, you may pay {R}. If you do, target creature can't block this turn.

Stoneshaker Shaman

At the beginning of each player's end step, that player sacrifices an untapped land of their choice.

Scorched Rusalka

{R}, Sacrifice a creature: Scorched Rusalka deals 1 damage to target player or planeswalker.

Weight of Spires

Weight of Spires deals damage to target creature equal to the number of nonbasic lands that creature's controller controls.

Blockbuster

{1}{R}, Sacrifice Blockbuster: It deals 3 damage to each tapped creature and each player.

Flaring Flame-Kin

As long as Flaring Flame-Kin is enchanted, it gets +2/+2, has trample, and has "{R}: Flaring Flame-Kin gets +1/+0 until end of turn."

Ignorant Bliss

Exile all cards from your hand face down. At the beginning of the next end step, return those cards to your hand, then draw a card.

Indentured Oaf

Prevent all damage that Indentured Oaf would deal to red creatures.

Gnat Alley Creeper

Gnat Alley Creeper can't be blocked by creatures with flying.

Flame-Kin War Scout

When another creature enters, sacrifice Flame-Kin War Scout. If you do, Flame-Kin War Scout deals 4 damage to that creature.

Greater Forgeling

{1}{R}: Greater Forgeling gets +3/-3 until end of turn.

Instill Furor

Enchant creature
Enchanted creature has "At the beginning of your end step, sacrifice this creature unless it attacked this turn."