That is not simple.
Imagine two PCs on opposite sides of a room. One of them has Anticipate Teleport up. The other has Dimension Door prepared. He Dimension Doors across the room. You are the DM. What do you say?
"Oh snap!"
Originally Posted by That Schubert Guy What Wrote that Vampire Article
In the D&D game, so much of a character’s identity is expressed by the powers that character can use.