Cheapest priced copy (Planar Chaos): $6.49 at Card Kingdom, near mint, their price list as of .
Chronozoa 
Creature — Illusion · 3/3 · Rare · Planar Chaos · #37
Flying
Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When this creature dies, if it had no time counters on it, create two tokens that are copies of it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $6.49 to $14.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planar Chaos | 37 | Rare | $6.49 | $14.99 |
3 rulings from Wizards of the Coast
- 1 February 2007Chronozoa's last ability creates two Chronozoa tokens that each enter with three time counters and have all of Chronozoa's abilities.
- 1 February 2007If Chronozoa becomes a copy of another creature and is put into the graveyard from the battlefield, no copies will be created. If another creature becomes a copy of Chronozoa and is put into a graveyard from the battlefield (with no time counters on it), two copies of Chronozoa will be created.
- 1 February 2007The ability checks to see if Chronozoa had no time counters on it at the time it was put into a graveyard from the battlefield. This doesn't necessarily mean it must have been sacrificed due to vanishing; it could have been put into the graveyard some other way (say, while the sacrifice ability of vanishing is on the stack).