Stifle and Modular

[Jsang]

Can I use Stifle to counter the modular trigger ability when the creature, say archound ravager come into play, and make it goto graveyard at once? And if it is legal, can the ravager controller sac an artifact in response?

[Sanguine Voyeur]

Can I use Stifle to counter the modular trigger ability when the creature, say archound ravager come into play, and make it goto graveyard at once?No, it's a static ability, not triggered or activated.

[Pinder]

You can, however, stifle the triggered ability that moves the counters onto something else when the Ravager dies.

In summary:

No, you can't stifle the counters as it comes into play.
Yes, you can stifle the counters moving as it leaves play.