t: add 1 to your mana pool.
any time you could mulligan and serum powder 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.)
Serum Powder prices from Darksteel
Serum Powder from Darksteel's Price Analysis
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3 Total Variations/Printings of Serum Powder
See All Variations Expansion | Price | Foil | |
|---|---|---|---|
| 1.65 | 28.4 | ||
| 1.47 | 4.48 | ||
| 1 |
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