Danger Sense (variant 1) Exhaust this card during your turn (and spend 2 Stamina) to force the overlord to discard 1 Overlord card from his hand at random. Put the discarded card face up on the table and mark it with your Hero's token. The Overlord will get it back (in his hand) at your Hero's next start of the turn. While this card is exhausted, add 1 additional brown die to your defense pool.
Danger Sense (variant 2) During the overlord's turn, immediately after he plays a card from his hand, you may exhaust this card (and spend 2 Stamina) to cancel the effects of the overlord's card and place it face up on the table. That card can't be played while face up on the table. The Overlord will get it back (in his hand) at the start of his next turn.
(As already stated by many in other threads, in a 4 heroes game this card is too good to be true...)