If you control a commander, you may cast this spell without paying its mana cost.
You may choose new targets for target spell or ability.
{1}{U}
Etherium Sculptor
Artifact Creature - Vedalken Artificer
Artifact spells you cast cost {1} less to cast.
1 /
2
{U}{U}
Muddle the Mixture
Instant
Counter target instant or sorcery spell.
Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
{2}
Reito Lantern
Artifact
{3}: Put target card from a graveyard on the bottom of its owner's library.
{2}
Sapphire Medallion
Artifact
Blue spells you cast cost {1} less to cast.
{2}{R}
Treasure Nabber
Creature - Goblin Rogue
Whenever an opponent taps an artifact for mana, gain control of that artifact until the end of your next turn.
3 /
2
{3}
Vessel of Endless Rest
Artifact
When Vessel of Endless Rest enters the battlefield, put target card from a graveyard on the bottom of its owner's library.
{T}: Add one mana of any color.
{X}{U}{U}{U}
Whir of Invention
Instant
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.