Mardu At the beginning of your end step, if a creature died under your control this turn, each opponent sacrifices a creature of their choice
The difference between one and two mana is huge, which is a good selling point for Stifle
Ingot Chewer and Mulldrifter can be cast cheaper when evoked, and then instead of paying the full whack, you can just make Offspring to keep one and get an extra EtB for value
As such the only time I have seen the -1 used is when you are digging for a specific card / answer or you have just made her onto a board she has no hope of surviving
The Hakbal EDH precon introduced some pretty powerful ones, like Ripples of Potential and Wave Goodbye, but there are also counter aplifiers like Hardened Scales you should consider
In the Ask Wizards column of August 2003, Brian Tinsman estimated that "around 250 copies" of Fraternal Exaltation had been printed and distributed