Conjured Currency — ruling 1

The only legal target for Conjured Currency’s ability is a permanent both owned and controlled by another player, although it doesn’t have to be the same player. For example, a permanent owned by an opponent but controlled by your teammate (or another opponent) could be chosen as the target.

Conjured Currency — ruling 2

The exchange occurs only if Conjured Currency and the target permanent are both on the battlefield and controlled by different players when the ability resolves. In addition, the target permanent must be one you neither own nor control. If any of these things aren’t true when the ability tries to resolve, the exchange won’t happen and neither permanent will change controllers.

Conjured Currency — ruling 3

You don’t necessarily have to control Conjured Currency when its ability resolves in order for the exchange to happen. If another player has gained control of Conjured Currency while the ability is on the stack, and a third player controls the target (and you don’t own it), you may choose to have those two players exchange control of the relevant permanents.

Conjured Currency : règles, fonctionnement et interactions (MTG)

Conjured Currency is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

At the beginning of your upkeep, you may exchange control of this enchantment and target permanent you neither own nor control.

How it works : Conjured Currency

Original English text — Wizards of the Coast / Scryfall

#1October 1, 2012· Wizards of the Coast
The only legal target for Conjured Currency’s ability is a permanent both owned and controlled by another player, although it doesn’t have to be the same player. For example, a permanent owned by an opponent but controlled by your teammate (or another opponent) could be chosen as the target.
No other card is named in this ruling.
#2October 1, 2012· Wizards of the Coast
The exchange occurs only if Conjured Currency and the target permanent are both on the battlefield and controlled by different players when the ability resolves. In addition, the target permanent must be one you neither own nor control. If any of these things aren’t true when the ability tries to resolve, the exchange won’t happen and neither permanent will change controllers.
No other card is named in this ruling.
#3October 1, 2012· Wizards of the Coast
You don’t necessarily have to control Conjured Currency when its ability resolves in order for the exchange to happen. If another player has gained control of Conjured Currency while the ability is on the stack, and a third player controls the target (and you don’t own it), you may choose to have those two players exchange control of the relevant permanents.
No other card is named in this ruling.