Rubinia Soulsinger

Card Name

Rubinia Soulsinger

Mana Cost

2

Type

Legendary Creature – Faerie

Rarity

Rare

rules Text

You may choose not to untap Rubinia Soulsinger during your untap phase.: Gain control of target creature. Lose control of target creature if Rubinia leaves play, if you lose control of Rubinia, or if Rubinia becomes untapped.

Legal Formats

Commander, Legacy, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Modern, Pauper, Pioneer, Standard

Rulings

(10/1/2009)
If Rubinia Soulsinger leaves the battlefield, you no longer control it, so the duration of its control-change effect ends.
(10/1/2009)
If Rubinia Soulsinger stops being tapped before its ability resolves — even if it becomes tapped again right away — you won't gain control of the targeted creature at all. The same is true if you lose control of Rubinia Soulsinger before the ability resolves.
(10/1/2009)
Once the ability resolves, it doesn't care whether the targeted permanent remains a legal target for the ability, only that it's on the battlefield. The effect will continue to apply to it even if it gains shroud, stops being a creature, or would no longer be a legal target for any other reason.