Serum Powder
About this card
Serum Powder is an artifact card in Magic: The Gathering with mana value 3 (color identity: colorless). First printed in Darksteel (2004); 3 paper printings in total. Role in Commander: ramp and card draw. Legal in Commander, Modern, Legacy and Vintage. Cheapest printing: €0.58 (Mystery Booster 2); most expensive: €0.89 (Iconic Masters).
Serum Powder 
Any time you could mulligan and this card is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)
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Legality
Rulings
2017-11-17
You can use Serum Powder's second ability only while it's in your hand. If this card is in your hand, you can choose either to mulligan or to use Serum Powder's ability. Using the ability doesn't prevent you from taking further mulligans, and taking a mulligan doesn't prevent you from using a Serum Powder's ability if you happen to draw one in your new hand.
2017-11-17
The cards in your hand are exiled for the rest of the game; they aren't shuffled back into your library if you take another mulligan. Cards exiled are always face up unless the effect that exiled them says they aren't. Be sure to return those cards to your deck for your next game.
Cards with the same role: ramp
Sol Ring
Arcane Signet
Fellwar Stone
Thought Vessel
Myriad Landscape
Mind Stone
Solemn Simulacrum
Commander's Sphere
Ancient Tomb
Temple of the False God
Chromatic Lantern
Lotus Petal


