Cheapest priced copy (The List): $1.29 at Card Kingdom, near mint, their price list as of .
Coffin Queen 
Creature — Zombie Wizard · 1/1 · Rare · Tempest · #114
You may choose not to untap this creature during your untap step.
{2}{B}, {T}: Put target creature card from a graveyard onto the battlefield under your control. When this creature becomes untapped or you lose control of this creature, exile that creature.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $1.29 to $5.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | TPR-87 | Rare | $1.29 | — |
| Secret Lair Drop | 1704 | Rare | $5.49 | $4.99 |
| Tempest | 114 | Rare | $4.49 | — |
3 rulings from Wizards of the Coast
- 4 October 2004If the creature put onto the battlefield leaves the battlefield, the tracking effect ends and the creature will no longer be exiled if something happens to the Coffin Queen.
- 4 October 2004If the creature put onto the battlefield phases out, the tracking effect continues when it phases back in if the Coffin Queen is still on the battlefield. If the Queen left the battlefield while the creature was phased out, the creature phases in as normal.
- 1 February 2014If Coffin Queen leaves the battlefield before its ability resolves, the delayed trigger condition can never be fulfilled, so the creature will not be exiled. If Coffin Queen is untapped when its ability resolves, the creature will not be exiled until the next time Coffin Queen becomes untapped.