Seat of the Synod

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Darksteel Citadel

Frogmite

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

Fiery Cannonade

Fiery Cannonade deals 2 damage to each non-Pirate creature.

Gorilla Shaman

{X}{X}{1}: Destroy target noncreature artifact with mana value X.

Myr Enforcer

Dispel

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Ancient Den

Fall from Favor

Enchant creature
When this Aura enters, tap enchanted creature and you become the monarch.
Enchanted creature doesn't untap during its controller's untap step unless that player is the monarch.

Springleaf Drum

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

Ardent Recruit

Metalcraft - This creature gets +2/+2 as long as you control three or more artifacts.

Thoughtcast

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

Thraben Inspector

When this creature enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

Shenanigans

Destroy target artifact.
Dredge 1 (If you would draw a card, you may mill a card instead. If you do, return this card from your graveyard to your hand.)

Kor Skyfisher

Flying
When this creature enters, return a permanent you control to its owner's hand.

Thriving Bluff

This land enters tapped. As it enters, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

Krark-Clan Shaman

Sacrifice an artifact: This creature deals 1 damage to each creature without flying.

Prophetic Prism

When this artifact enters, draw a card.
{1}, {T}: Add one mana of any color.

Atog

Sacrifice an artifact: This creature gets +2/+2 until end of turn.

Chromatic Star

{1}, {T}, Sacrifice this artifact: Add one mana of any color.
When this artifact is put into a graveyard from the battlefield, draw a card.

Leave No Trace

Radiance — Destroy target enchantment and each other enchantment that shares a color with it.

Great Furnace

Plains

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.

Galvanic Blast

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