Things I May No Longer Do While Playing III: I May Not Iron Heart Surge Rule Zero

[The Glyphstone]

* If the creature has to roll a 1 to miss the Tank, it may be too high of a CR
** Especially if it's power attacking for full
*** With 6 attacks and a rend
**** If said creature can one-shot the tank with one full attack, something is horribly wrong and it needs to be nerfed.

AKA the Don't Use Dragons rule.