User blog comment:Drew34000/Level 50 Club/@comment-5181745-20120719144605/@comment-5309185-20120720101905

Have 20 dinos of 22 and all 8 trophies, never spent crystals on dinos, only random egg and lately fusion den. It's not that hard if you have a little patience. Although the trick with dino den is a bit trickier now since common dinos now have probability of 500, not 250 as before.