[Modern] Drev vs GWx?

I'm having a bit of difficulty figuring out when to side revelry in against devoted druid combo, bant, abzan, etc. At first I thought I'd bring in 3 or so against them considering the likelihood of something that is impossible to deal with (skite, worship, and leyline being the big ones), but so far I've ended a number of games with a revelry or two in hand against a field with no targets the entire game.

How popular are these cards to side in? Is it worth siding a couple drev in just in case for game 2, or is it better to bank on them not having those specific cards / side them for game 3 if I see something?