Mercule
Adventurer
Rel said:Fighter Player - "I Ready to Charge anything that comes out the door!"
Rogue Player - "I Ready to Flank anybody the Fighter Charges!"
Wizard Player - "I Ready to Magic Missile any creature that comes out that door!"
Cleric Player - "I Ready to Turn Undead if an Undead comes through the door!"
I love readied actions, for just this sort of reason. You ready a pretty specific action against a relatively set trigger. "I change anything that comes through the door" includes allies, angels, demons, etc. If I'm feeling generous, the readier gets a Spot check (which people prone to charge never seem to take), otherwise, the die is already cast.
If handled correctly by the DM, readied actions are very much "enough rope to hang oneself". If it requires much thought or even observation to figure out whether you want to carry through, there's no way to avoid it. The character will be following through, even if it is a big mistake. Readied actions are programmed reflexes, in essence. You can't stop halfway through.
Also, you can't ready to "cast a spell". It's "Magic Missle" or "Mage Armor". It's throw the dagger or stab with it. About the only break I cut PCs with a readied action is that a charge can be modified to a standard attack, if the baddie appears too close to them.
That said, they still don't work outside of combat.