What does 'exhausting' a Unit mean?

'Exhausting' a Unit in the context of Riftbound typically means that the Unit has been tapped and cannot perform actions for the remainder of the turn. This mechanic is key in strategy games as it limits the options available for that Unit, preventing it from attacking or using special abilities until it is ready to untap in a future turn.

When a Unit is exhausted, it demonstrates a form of resource management and allows players to make tactical decisions about when to apply pressure or hold back in a game. This concept is fundamental to many card and board games, where managing the timing and availability of units is crucial for success.

The other options suggest actions that would either remove a Unit from play or enhance its abilities, which are not the characteristics associated with exhausting a Unit.