Can I give {Sage of Hours} +1/+1 counters with {Bow of Nylea}, could I still do the extra turn thing?
Sure. Sage's ability doesn't care where the counters came from, just that counters are being removed.
So anything that gives +1 counters can be used? :D That makes it a lot easier! Make the sage indestructible and hexproof! (and keep more creatures out in case I need to sac) and i'll be set! :D woot woot.
-whispers- now to get my hands on 3 more sages....