Dance of Many

When Dance of Many enters, create a token that's a copy of target nontoken creature.
When Dance of Many leaves the battlefield, exile the token.
When the token leaves the battlefield, sacrifice Dance of Many.
At the beginning of your upkeep, sacrifice Dance of Many unless you pay {U}{U}.

Secret Lair Drop

Masters Edition III

When Dance of Many enters the battlefield, put a token onto the battlefield that's a copy of target nontoken creature.
When Dance of Many leaves the battlefield, exile the creature token.
When the creature token leaves the battlefield, sacrifice Dance of Many.
At the beginning of your upkeep, sacrifice Dance of Many unless you pay {U}{U}.

Fifth Edition

During your upkeep, pay o
Uo
U or bury Dance of Many.
When you play Dance of Many, choose target summon card. When Dance of Many comes into play, put a token creature into play and treat it as an exact copy of that summon card. If either Dance of Many or the token creature leaves play, bury the other.

Chronicles Foreign Black Border

Chronicles

When Dance of Many comes into play, choose a target summon card in play. Put a token creature into play and treat it as though an exact copy of that summon card were just summoned. If Dance of Many leaves play, remove that token creature from game. If the token creature leaves play, bury Dance of Many.
During your upkeep, pay o
Uo
U or bury Dance of Many.

Destroying the creature that was copied will not cause the token creature to be destroyed as well.

Each Dance of Many is associated only with its token creature. If one Dance leaves the battlefield, only the corresponding token is affected, not all tokens from all instances of Dance of Many.

The ability is targeted and checks the validity of the target when put on the stack and when resolving. If the creature is not still there when the copy ability resolves, the ability doesn't resolve and no token is put onto the battlefield. This card remains on the battlefield as an enchantment with no token.

Treat the token as entering as a copy of the chosen creature. If that creature normally gets counters when entering, the token creature gets counters.

If Dance of Many leaves the battlefield before its first ability has resolved, its second ability will trigger and do nothing. Then its first ability will resolve and put a token onto the battlefield. That token won't have any connection to a Dance of Many permanent, so it won't be exiled when a Dance of Many leaves the battlefield.