- It can deny minions with quickstrike (yet it barely worths for quickstrike minions usually hit low)
- it can deny minons that can be put in play when revealed as an augment card
- It can deny minons that are being summoned by some villain's special abilities (like Master Mold)
- Its best value is done if it activates during player's phase. Face the Past played by another Hero, mostly.
- Its "cannot activate" effects wears off at the end of the phase, which means its gonna waste for encounter cards since minions wont usually activate at the moment they are revealed (except minions with "when revealed/when put in play")
- Its not a forced interrupt. Once in play you can decide when to use it.
- It cannot change the current engagement of a minion that is already in play.
- Tigra and Thor are two Heroes who can give enough benefit from this card to worth something
Outside from these two, I'd even consider it worth. It will usually move a minion without any extra benefit, and its 2ER.