when player casts black spell can i pay BBB and get three +1/+1 counters on Purraj of Urborg?
when player casts black spell can i pay BBB and get three +1/+1 counters on Purraj of Urborg?
No. Purraj's ability triggers once for each spell, and when it resolves, lets you either pay B to get a counter, or pay nothing and get nothing. Those are your only choices.
Fluttershy is best pony.