Every distinct wording since 2010, newest first.
June 6, 2025 · Final Fantasy
Any time you have priority, you may turn a manifested permanent you control face up. This is a special action that doesn’t use the stack (see rule 116.2b). To do this, show all players that the card representing that permanent is a creature card and what that card’s mana cost is, pay that cost, then turn the permanent face up. The effect defining its characteristics while it was face down ends, and it regains its normal characteristics. (If the card representing that permanent isn’t a creature card or it doesn’t have a mana cost, it can’t be turned face up this way.)
July 3, 2020 · Core Set 2021
A permanent “explores” after the process described in rule 701.40a is complete, even if some or all of those actions were impossible.