Bait Doll ... yugioh?

Question

Bait Doll
Normal Spell
Force the activation of 1 face-down Trap card. If the timing of the activation of the Trap card is incorrect, negate the effect and destroy it. If it is not a Trap card, it is returned to it's original position. After this card is activated, it is placed into the Deck (not the graveyard). Then shuffle the Deck.

the rulings for this card say that if the activation timing is correct then all costs must be paid ... if the cost can't be paid it's negated and destroyed etc. ... if it hits magic jammer and they choose not to activate it then it counts as incorrect timing 

if it hits dark bribe or solemn judgment would the opponent have to pay the costs? (i draw for bribe or they lose half lp for solemn)

I am considering main decking one instead of the second mystical space typhoon as extra s/t removal ... thoughts?

Aero · Accepted Answer

Firstly, your opponent can CHAIN Dark Bribe to Bait Doll, but if they refuse, then Dark Bribe misses the timing, because Bait Doll is resolving its effect. Here's the ruling:
If "Bait Doll" is activated and targets "Magic Jammer", "Magic Drain", etc. the opponent may chain the Trap Card to negate and destroy "Bait Doll". If he / she does not, the Trap Card will be destroyed since the activation timing is incorrect, and "Bait Doll" will be shuffled into your Deck.[1]
No costs have to be paid unless your opponent chains the card to Bait Doll in the first place.