Starbuck_II
Explorer
I agree with you here. The 4e Flesh to Stone gaze is, imho, the way to go. 3 Die rolls (including the "to hit", if needed) in 2-3 turns is enough to give people a chance to act. The "sleep" spell in 4e is exactly what should be done.
Death effects (such as Finger of death) might simply give you the "dying" condition: you have to roll a death save every turn, if you get to 3, you die. Clerics (and other similar classes) might give you bonus to saving throws (with "guidance" spells), and normal classes might give you a +2 if they roll some ability or skill (such as heal).
You could make these failures weaken the creature as well. Say they take 5d6 damage each time they fail the death save.
That way even berfore their time is up in another round, failure has meaning each round as well.