Cheapest priced copy (Commander 2013): $0.99 at Card Kingdom, near mint, their price list as of .
Sydri, Galvanic Genius 
Legendary Creature — Human Artificer · 2/2 · Mythic · Commander 2016 · #224
{U}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.
{W}{B}: Target artifact creature gains deathtouch and lifelink until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.99 to $1.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 220 | Mythic | $0.99 | — |
| Commander 2016 | 224 | Mythic | $1.29 | — |
| Commander 2013 Oversized | 220 | Mythic | — | $0.99 |
4 rulings from Wizards of the Coast
- 17 October 2013A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn’t matter how long the permanent has been a creature.
- 17 October 2013If the noncreature artifact had any other supertypes, types, or subtypes, it will keep those. In most cases, the artifact creature won’t have any creature types.
- 17 October 2013Multiple instances of deathtouch or lifelink on the same creature are redundant.
- 17 October 2013If an Equipment attached to a creature becomes a creature, it becomes unattached. An Equipment that is also a creature can’t equip another creature.