Turn one of your Pillars or Pendulums into a Nymph. [...]
1st: It should say: Turns!
If it says turn, that would mean that the player will be doing the action, but as I understood the card, it is the spell that does the turning, so a "s" is required.
2nd: cut the your off!
The Nymph Tear is also able to target opponents Pillars and Pendulums! - This can be a very effective way to destroy like Poseidons water Towers and at the same time fill his side with
Malignant Cells Nymph Queens.