Temur Battle Rage

Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.) Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

Springleaf Drum

{T}, Tap an untapped creature you control: Add one mana of any color to your mana pool.

Ichor Wellspring

When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield, draw a card.

Perilous Research

Draw two cards, then sacrifice a permanent.

Darksteel Citadel

Indestructible (Effects that say "destroy" don't destroy this land.) {T}: Add {1} to your mana pool.

Frogmite

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Thoughtcast

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Draw two cards.

Great Furnace

(Great Furnace isn't a spell.) {T}: Add {R} to your mana pool.

Seat of the Synod

(Seat of the Synod isn't a spell.) {T}: Add {U} to your mana pool.

Tree of Tales

(Tree of Tales isn't a spell.) {T}: Add {G} to your mana pool.

Vault of Whispers

(Vault of Whispers isn't a spell.) {T}: Add {B} to your mana pool.

Flayer Husk

Living weapon (When this Equipment enters the battlefield, put a 0/0 black Germ creature token onto the battlefield, then attach this to it.) Equipped creature gets +1/+1. Equip {2}

Myr Enforcer

Affinity for artifacts (This spell costs {1} less to play for each artifact you control.)

Carapace Forger

Metalcraft — Carapace Forger gets +2/+2 as long as you control three or more artifacts.

Galvanic Blast

Galvanic Blast deals 2 damage to target creature or player. Metalcraft — Galvanic Blast deals 4 damage to that creature or player instead if you control three or more artifacts.

Atog

{0}: +2/+2. Each time you use this ability, you must sacrifice one of your artifacts in play.

Chromatic Star

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color to your mana pool. When Chromatic Star is put into a graveyard from play, draw a card.

Tranquility

All enchantments in play must be discarded.

Gearseeker Serpent

Prophetic Prism

Fling

As an additional cost to cast this spell, sacrifice a creature. Fling deals damage equal to the sacrificed creature's power to any target.